產品展示
產品特點
傳動比 |
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
10 |
11 |
12 |
13 |
14 |
15 |
16 | |
公稱傳動比 |
總傳動比 |
50 |
56 |
63 |
71 |
80 |
90 |
100 |
112 |
125 |
140 |
160 |
180 |
200 |
224 |
250 |
280 |
高速級傳動比 |
2.5 |
2.8 |
3.15 |
3.15 |
3.55 |
4 |
4.5 |
5 |
5 |
5 |
5.6 |
6.3 |
6.3 |
6.3 |
7.1 |
7.1 | |
中間級傳動比 |
4 |
4 |
4 |
4.5 |
4.5 |
4.5 |
4.5 |
4.5 |
4.5 |
5 |
5 |
5 |
5.6 |
5.6 |
5.6 |
6.3 | |
低速級傳動比 |
5 |
5 |
5 |
5 |
5 |
5 |
5 |
5 |
5.6 |
5.6 |
5.6 |
5.6 |
5.6 |
6.3 |
6.3 |
6.3 |
ZS、ZSH、ZSSH減速器外形、安裝尺寸及裝配型式
型號 |
中心距 |
中心高 |
輪廓尺寸 |
B1 |
B2 |
L1 |
L2 |
L3 |
H1 |
地腳螺釘 | |||||||||||||
a |
a1 |
a2 |
a3 |
H0 |
H |
L |
B |
d |
n |
B3 |
L4 |
L5 |
L6 |
L7 |
L8 | ||||||||
ZS
ZSH
ZSSH |
50 |
500 |
100 |
150 |
250 |
300-0.5 |
588 |
910 |
346 |
346 |
90 |
760 |
-19 |
124 |
25 |
M20 |
8 |
280 |
15 |
150 |
240 |
300 |
─ |
65 |
650 |
150 |
200 |
300 |
350-0.5 |
688 |
1155 |
400 |
400 |
100 |
955 |
-13 |
155 |
30 |
M24 |
330 |
25 |
220 |
260 |
400 |
─ | ||
75 |
750 |
150 |
250 |
350 |
400-0.5 |
821 |
1305 |
460 |
460 |
105 |
1110 |
-23 |
160 |
35 |
10 |
390 |
35 |
220 |
320 |
330 |
130 | ||
82.5 |
825 |
175 |
250 |
400 |
450-0.5 |
916 |
1450 |
500 |
500 |
110 |
1230 |
-22 |
180 |
38 |
M30 |
420 |
30 |
230 |
320 |
380 |
195 | ||
95 |
950 |
200 |
300 |
450 |
500-0.5 |
1016 |
1625 |
570 |
570 |
120 |
1360 |
21 |
180 |
40 |
480 |
70 |
280 |
350 |
380 |
250 | |||
110 |
1100 |
250 |
350 |
500 |
550-0.5 |
1116 |
1865 |
620 |
620 |
130 |
1582 |
0 |
211 |
45 |
M36 |
530 |
55 |
345 |
435 |
430 |
260 | ||
125 |
1250 |
250 |
400 |
600 |
650-0.5 |
1306 |
2115 |
710 |
710 |
145 |
1745 |
77 |
218 |
50 |
610 |
130 |
300 |
510 |
490 |
330 | |||
145 |
1450 |
300 |
450 |
700 |
750-0.5 |
1496 |
2440 |
785 |
785 |
145 |
2040 |
72 |
245 |
55 |
M42 |
700 |
135 |
365 |
585 |
570 |
390 | ||
165 |
1650 |
350 |
500 |
800 |
850-0.5 |
1691 |
2760 |
845 |
845 |
160 |
2305 |
102 |
267 |
60 |
740 |
165 |
415 |
640 |
650 |
460 |
型號 |
高速軸 |
S |
S1 |
低速軸 |
T |
裝配型式Ⅴ-Ⅷ |
最大重量kg | ||||||||||||
l |
D |
b |
t |
I1 |
D1 |
b1 |
t1 |
T1 |
d4 |
D2 |
d8 |
d9 |
h2 | ||||||
ZS
ZSH
ZSSH |
50 |
55 |
25 |
8 |
27.5 |
280 |
290 |
105 |
70 |
20 |
74.2 |
355 |
210 |
75 |
25 |
40 |
M6 |
15 |
325 |
65 |
55 |
30 |
8 |
32.5 |
305 |
317 |
115 |
85 |
24 |
90.0 |
390 |
235 |
95 |
75 |
55 |
M8 |
20 |
580 | |
75 |
55 |
30 |
8 |
32.5 |
335 |
347 |
140 |
100 |
28 |
105.7 |
450 |
270 |
110 |
825 | |||||
82.5 |
55 |
35 |
10 |
37.8 |
355 |
367 |
140 |
110 |
32 |
116.5 |
470 |
290 |
120 |
1105 | |||||
95 |
70 |
40 |
12 |
42.8 |
415 |
425 |
165 |
130 |
36 |
137.2 |
540 |
325 |
140 |
1445 | |||||
110 |
85 |
50 |
16 |
53.5 |
455 |
466 |
180 |
140 |
36 |
147.2 |
580 |
350 |
150 |
2100 | |||||
125 |
85 |
50 |
16 |
53.5 |
500 |
511 |
200 |
170 |
40 |
178.5 |
655 |
395 |
180 |
2910 | |||||
145 |
105 |
60 |
18 |
63.9 |
560 |
571 |
240 |
200 |
45 |
209.7 |
735 |
435 |
220 |
4020 | |||||
165 |
105 |
70 |
20 |
74.2 |
605 |
613 |
280 |
220 |
50 |
231.0 |
805 |
465 |
240 |
5720 |
帶負號的尺寸在高速軸軸心線的右側,不帶負號的尺寸位置與圖示位置相同。
ZS、ZSH、ZSSH減速器承載能力 n1=1000(轉/分)
中
心
距 |
工作
類型 |
傳動比代號 | |||||||||||||||
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
10 |
11 |
12 |
13 |
14 |
15 |
16 | ||
公稱傳動比 | |||||||||||||||||
50 |
56 |
63 |
71 |
80 |
90 |
100 |
112 |
125 |
140 |
160 |
180 |
200 |
224 |
250 |
280 | ||
高速軸許用功率P1(kW) | |||||||||||||||||
500 |
中型 |
6.46 |
5.75 |
5.06 |
5.06 |
44.1 |
3.81 |
3.28 |
2.85 |
2.65 |
2.37 |
2.12 |
1.89 |
1.67 |
1.39 |
1.24 |
1.10 |
重型 |
5.01 |
4.62 |
4.15 |
3.64 |
3.33 |
3.05 |
3.68 |
2.33 |
2.33 |
2.25 |
1.95 |
1.65 |
1.58 |
1.39 |
1.24 |
1.10 | |
特重型 |
4.76 |
4.32 |
3.90 |
3.35 |
3.02 |
2.73 |
2.50 |
2.28 |
2.28 |
2.01 |
1.85 |
1.61 |
1.41 |
1.39 |
1.24 |
1.09 | |
連續(xù)型 |
3.70 |
3.30 |
2.96 |
2.65 |
2.32 |
2.06 |
1.86 |
1.66 |
1.37 |
1.23 |
1.09 |
0.973 |
0.864 |
0.718 |
0.637 |
0.567 | |
650 |
中型 |
12.5 |
11.1 |
9.98 |
8.92 |
7.81 |
6.95 |
6.25 |
5.59 |
4.58 |
4.10 |
3.66 |
3.26 |
2.89 |
2.40 |
2.13 |
1.90 |
重型 |
11.2 |
10.3 |
9.58 |
8.58 |
7.81 |
6.95 |
6.25 |
5.59 |
4.58 |
4.10 |
3.66 |
3.26 |
2.89 |
2.40 |
2.13 |
1.90 | |
特重型 |
9.75 |
8.96 |
8.26 |
7.59 |
6.87 |
6.30 |
5.82 |
5.29 |
4.36 |
3.96 |
3.59 |
3.24 |
2.89 |
2.40 |
2.13 |
1.90 | |
連續(xù)型 |
6.38 |
5.70 |
5.11 |
4.57 |
4.00 |
3.56 |
3.20 |
2.86 |
2.36 |
2.12 |
1.89 |
1.68 |
1.49 |
1.24 |
1.10 |
0.979 | |
750 |
中型 |
19.7 |
17.6 |
15.8 |
14.1 |
12.4 |
11.0 |
9.92 |
8.86 |
7.26 |
6.51 |
5.81 |
5.17 |
4.59 |
3.82 |
3.39 |
3.01 |
重型 |
17.5 |
15.6 |
13.7 |
13.7 |
12.0 |
10.4 |
8.92 |
7.76 |
7.62 |
6.51 |
5.81 |
5.17 |
4.59 |
3.82 |
3.39 |
3.02 | |
特重型 |
15.5 |
14.2 |
13.1 |
12.0 |
10.9 |
9.99 |
8.72 |
7.59 |
6.92 |
6.29 |
5.70 |
5.14 |
4.59 |
.3.82 |
3.39 |
3.01 | |
連續(xù)型 |
10.1 |
9.04 |
8.11 |
7.25 |
6.35 |
5.56 |
5.09 |
4.54 |
3.75 |
3.36 |
3.00 |
3.67 |
2.37 |
1.97 |
1.75 |
1.55 | |
825 |
中型 |
29.4 |
26.3 |
23.6 |
21.1 |
18.5 |
16.4 |
14.8 |
13.2 |
10.8 |
9.71 |
8.67 |
7.71 |
6.85 |
5.70 |
5.06 |
4.49 |
重型 |
22.9 |
21.1 |
19.4 |
16.7 |
15.3 |
14.0 |
12.9 |
11.9 |
10.8 |
9.71 |
8.67 |
7.71 |
6.85 |
5.70 |
5.06 |
4.49 | |
特重型 |
21.7 |
19.7 |
17.9 |
15.4 |
13.9 |
12.5 |
11.5 |
10.6 |
10.3 |
9.24 |
8.50 |
7.68 |
6.52 |
5.70 |
5.06 |
4.49 | |
連續(xù)型 |
15.1 |
13.5 |
12.1 |
10.8 |
9.47 |
8.42 |
7.58 |
6.78 |
5.59 |
5.01 |
4.47 |
3.98 |
3.53 |
2.94 |
2.61 |
2.32 | |
950 |
中型 |
41.8 |
37.4 |
33.6 |
30.0 |
26.3 |
23.4 |
21.1 |
18.8 |
15.4 |
13.8 |
12.3 |
11.0 |
9.75 |
8.11 |
7.20 |
6.40 |
重型 |
37.5 |
34.8 |
31.9 |
28.7 |
26.3 |
23.4 |
20.8 |
18.1 |
15.4 |
13.8 |
12.3 |
11.0 |
9.75 |
8.11 |
7.20 |
6.40 | |
特重型 |
32.7 |
30.1 |
27.8 |
25.5 |
23.1 |
21.2 |
19.6 |
17.7 |
14.7 |
13.4 |
12.1 |
10.9 |
9.75 |
8.11 |
7.20 |
6.40 | |
連續(xù)型 |
21.4 |
19.2 |
17.2 |
15.4 |
13.5 |
12.0 |
10.8 |
9.64 |
7.95 |
7.13 |
6.37 |
5.66 |
5.03 |
4.18 |
3.71 |
3.30 | |
1100 |
中型 |
57.3 |
51.3 |
46.0 |
41.1 |
36.0 |
32.1 |
28.9 |
25.8 |
21.1 |
18.9 |
16.9 |
15.1 |
13.4 |
11.1 |
9.87 |
8.77 |
重型 |
51.3 |
47.7 |
44.2 |
40.8 |
36.0 |
32.1 |
28.9 |
25.8 |
21.1 |
18.9 |
16.9 |
15.1 |
13.4 |
11.1 |
9.87 |
8.77 | |
特重型 |
44.9 |
41.3 |
38.1 |
35.0 |
31.7 |
29.1 |
26.9 |
24.4 |
20.2 |
18.3 |
16.6 |
15.0 |
13.4 |
11.1 |
9.87 |
8.77 | |
連續(xù)型 |
29.4 |
26.3 |
23.6 |
21.1 |
18.5 |
16.4 |
14.8 |
13.2 |
10.9 |
9.78 |
8.73 |
7.77 |
6.90 |
5.73 |
5.09 |
4.53 | |
1250 |
中型 |
94.0 |
84.2 |
74.4 |
70.9 |
62.1 |
55.3 |
48.9 |
42.7 |
36.5 |
32.7 |
29.2 |
26.0 |
23.1 |
19.2 |
17.0 |
15.2 |
重型 |
77.2 |
69.1 |
61.0 |
61.0 |
53.4 |
46.4 |
40.0 |
34.9 |
34.9 |
32.7 |
29.2 |
24.9 |
23.1 |
19.2 |
17.0 |
15.2 | |
特重型 |
77.2 |
69.1 |
61.0 |
60.4 |
53.0 |
45.4 |
39.2 |
34.2 |
34.2 |
31.6 |
28.6 |
24.4 |
23.1 |
19.2 |
17.0 |
15.2 | |
連續(xù)型 |
50.6 |
45.3 |
40.6 |
36.3 |
31.8 |
28.3 |
25.5 |
22.8 |
18.8 |
16.9 |
15.1 |
13.4 |
11.9 |
9.90 |
8.79 |
7.82 | |
1450 |
中型 |
156 |
140 |
126 |
112 |
98.5 |
87.7 |
79.0 |
70.6 |
57.8 |
51.9 |
46.4 |
41.2 |
36.6 |
30.5 |
27.0 |
24.1 |
重型 |
130 |
117 |
103 |
95.4 |
87.6 |
78.8 |
68.2 |
59.5 |
57.8 |
51.9 |
46.4 |
41.2 |
36.6 |
30.5 |
27.0 |
24.1 | |
特重型 |
122 |
112 |
102 |
87.8 |
79.5 |
71.9 |
66.1 |
58.2 |
55.2 |
50.1 |
45.4 |
41.2 |
36.6 |
30.5 |
27.0 |
24.1 | |
連續(xù)型 |
80.1 |
71.7 |
64.4 |
57.6 |
50.5 |
44.9 |
40.5 |
36.2 |
29.8 |
26.8 |
23.9 |
21.3 |
18.9 |
15.7 |
14.0 |
12.4 | |
1650 |
中型 |
233 |
208 |
187 |
167 |
147 |
131 |
118 |
105 |
86.2 |
77.4 |
69.1 |
61.5 |
54.6 |
45.4 |
40.3 |
35.9 |
重型 |
177 |
164 |
151 |
130 |
120 |
110 |
101 |
93.3 |
86.2 |
77.4 |
69.1 |
61.5 |
54.6 |
45.4 |
40.3 |
35.9 | |
特重型 |
168 |
153 |
139 |
120 |
109 |
98.3 |
90.3 |
83.3 |
82.2 |
72.9 |
67.1 |
61.2 |
51.6 |
45.4 |
40.3 |
35.9 | |
連續(xù)型 |
119 |
107 |
95.8 |
85.7 |
75.2 |
66.9 |
60.3 |
53.9 |
44.5 |
39.9 |
35.7 |
31.7 |
28.2 |
23.4 |
20.8 |
18.5 |
n1=1500(轉/分)
中
心
距 |
工作
類型 |
傳動比代號 | |||||||||||||||
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
10 |
11 |
12 |
13 |
14 |
15 |
16 | ||
公稱傳動比 | |||||||||||||||||
50 |
56 |
63 |
71 |
80 |
90 |
100 |
112 |
125 |
140 |
160 |
180 |
200 |
224 |
250 |
280 | ||
高速軸許用功率P1(kW) | |||||||||||||||||
500 |
中型 |
8.54 |
7.62 |
6.72 |
6.72 |
5.86 |
5.08 |
4.38 |
3.81 |
3.81 |
3.56 |
3.18 |
2.69 |
2.51 |
2.09 |
1.85 |
1.65 |
重型 |
6.89 |
6.26 |
5.69 |
4.90 |
4.49 |
4.11 |
3.77 |
3.29 |
3.29 |
2.03 |
2.75 |
2.32 |
2.13 |
2.09 |
1.85 |
1.65 | |
特重型 |
6.72 |
6.11 |
5.52 |
4.75 |
4.28 |
3.87 |
3.49 |
3.19 |
3.19 |
2.77 |
2.51 |
2.28 |
1.91 |
1.91 |
1.75 |
1.48 | |
連續(xù)型 |
5.53 |
4.94 |
4.43 |
3.96 |
3.47 |
3.09 |
2.78 |
2.48 |
2.05 |
1.84 |
1.64 |
1.46 |
1.29 |
1.08 |
0.955 |
0.849 | |
650 |
中型 |
18.6 |
16.6 |
14.9 |
13.3 |
11.7 |
10.4 |
9.36 |
8.36 |
6.85 |
6.14 |
5.49 |
4.88 |
4.33 |
3.60 |
3.20 |
2.84 |
重型 |
14.7 |
13.5 |
12.5 |
11.5 |
10.6 |
9.69 |
8.89 |
8.23 |
6.85 |
6.14 |
5.49 |
4.88 |
4.33 |
3.60 |
3.20 |
2.84 | |
特重型 |
13.2 |
12.1 |
11.2 |
10.3 |
9.29 |
8.51 |
7.87 |
7.42 |
6.06 |
5.58 |
5.12 |
4.62 |
4.16 |
3.46 |
3.12 |
2.81 | |
連續(xù)型 |
9.53 |
8.52 |
7.64 |
6.83 |
5.99 |
5.32 |
4.80 |
4.29 |
3.53 |
3.17 |
2.83 |
2.52 |
2.23 |
1.86 |
1.65 |
1.47 | |
750 |
中型 |
27.8 |
24.9 |
22.0 |
21.1 |
18.5 |
16.5 |
14.4 |
12.6 |
10.9 |
9.75 |
8.71 |
7.74 |
6.87 |
5.72 |
5.08 |
4.51 |
重型 |
23.3 |
21.4 |
19.0 |
18.4 |
17.0 |
14.4 |
12.5 |
10.9 |
10.9 |
9.75 |
8.71 |
7.71 |
6.87 |
5.72 |
5.08 |
4.51 | |
特重型 |
20.8 |
19.2 |
17.7 |
16.3 |
14.7 |
13.5 |
12.5 |
10.9 |
9.61 |
8.85 |
8.12 |
7.33 |
6.60 |
5.49 |
4.95 |
4.46 | |
連續(xù)型 |
15.1 |
13.5 |
12.1 |
10.8 |
9.49 |
8.45 |
7.61 |
6.80 |
5.61 |
5.03 |
4.49 |
4.00 |
3.55 |
2.95 |
2.62 |
2.33 | |
825 |
中型 |
40.7 |
37.8 |
34.4 |
31.2 |
27.6 |
24.6 |
22.1 |
19.8 |
16.2 |
14.5 |
13.0 |
11.6 |
10.3 |
8.53 |
7.57 |
6.73 |
重型 |
31.2 |
28.4 |
25.9 |
22.3 |
20.5 |
18.8 |
17.3 |
16.0 |
16.0 |
13.9 |
12.8 |
11.6 |
9.81 , TD>
|
8.53 |
7.57 |
6.73 | |
特重型 |
30.5 |
27.8 |
25.1 |
21.6 |
19.6 |
17.7 |
16.0 |
14.6 |
14.3 |
12.7 |
11.5 |
10.5 |
8.80 |
8.19 |
7.38 |
6.66 | |
連續(xù)型 |
22.5 |
20.1 |
18.1 |
16.1 |
14.1 |
12.6 |
11.3 |
10.1 |
8.36 |
7.50 |
6.70 |
5.96 |
5.29 |
4.40 |
3.91 |
3.47 | |
950 |
中型 |
62.3 |
55.8 |
50.1 |
44.8 |
39.3 |
34.9 |
31.5 |
28.1 |
23.1 |
20.7 |
18.5 |
16.4 |
14.6 |
12.1 |
10.8 |
9.59 |
重型 |
49.3 |
45.4 |
41.9 |
38.3 |
35.2 |
32.3 |
28.9 |
25.2 |
34.1 |
20.7 |
18.5 |
16.4 |
14.6 |
12.1 |
10.8 |
9.59 | |
特重型 |
44.1 |
40.6 |
37.4 |
34.4 |
31.2 |
28.6 |
26.5 |
24.3 |
20.4 |
18.8 |
17.2 |
15.5 |
14.0 |
11.7 |
10.5 |
9.48 | |
連續(xù)型 |
31.9 |
28.6 |
25.7 |
22.9 |
20.1 |
17.9 |
16.1 |
14.4 |
11.9 |
10.7 |
9.53 |
8.48 |
7.53 |
6.26 |
5.56 |
4.95 | |
1100 |
中型 |
85.3 |
76.4 |
68.6 |
61.3 |
53.8 |
47.9 |
43.1 |
38.6 |
31.6 |
28.3 |
25.3 |
22.5 |
20.0 |
16.6 |
14.8 |
13.1 |
重型 |
67.5 |
62.2 |
57.4 |
53.4 |
49.3 |
45.4 |
42.2 |
38.6 |
31.6 |
28.3 |
25.3 |
22.5 |
20.0 |
16.6 |
14.8 |
13.1 | |
特重型 |
60.4 |
55.6 |
51.3 |
47.2 |
42.8 |
39.2 |
36.3 |
33.4 |
27.9 |
25.7 |
23.6 |
21.3 |
19.2 |
16.0 |
14.4 |
13.0 | |
連續(xù)型 |
43.7 |
39.1 |
35.1 |
31.4 |
27.6 |
24.5 |
22.1 |
19.8 |
16.3 |
14.6 |
13.1 |
11.6 |
10.3 |
8.59 |
7.63 |
6.73 | |
1250 |
中型 |
121 |
108 |
96.2 |
96.2 |
84.5 |
73.7 |
63.9 |
56.0 |
54.5 |
48.9 |
43.7 |
38.9 |
34.5 |
28.7 |
25.5 |
22.7 |
重型 |
107 |
94.7 |
83.3 |
83.3 |
73.1 |
63.7 |
55.2 |
48.2 |
48.2 |
48.2 |
40.5 |
34.5 |
34.5 |
28.7 |
25.5 |
22.7 | |
特重型 |
104 |
94.7 |
83.3 |
81.3 |
73.1 |
63.7 |
55.2 |
48.2 |
48.2 |
44.4 |
40.2 |
33.9 |
33.2 |
27.6 |
24.9 |
22.4 | |
連續(xù)型 |
75.2 |
67.3 |
60.5 |
54.1 |
47.6 |
42.3 |
38.1 |
34.1 |
28.1 |
25.2 |
22.6 |
20.1 |
17.8 |
14.8 |
13.2 |
11.7 | |
1450 |
中型 |
220 |
198 |
162 |
162 |
142 |
124 |
108 |
94.8 |
86.4 |
77.5 |
69.3 |
61.7 |
54.8 |
45.6 |
40.5 |
36.0 |
重型 |
175 |
160 |
140 |
126 |
116 |
107 |
93.3 |
81.7 |
81.7 |
77.5 |
68.8 |
58.6 |
54.8 |
45.6 |
40.5 |
36.0 | |
特重型 |
164 |
151 |
140 |
123 |
111 |
101 |
91.4 |
81.7 |
76.4 |
70.4 |
64.6 |
57.5 |
50.7 |
43.8 |
39.4 |
35.6 | |
連續(xù)型 |
119 |
107 |
95.7 |
85.7 |
75.2 |
67.0 |
60.4 |
54.0 |
44.6 |
40.0 |
35.8 |
31.8 |
28.3 |
23.5 |
20.9 |
18.6 | |
1650 |
中型 |
310 |
290 |
272 |
241 |
218 |
193 |
168 |
140 |
129 |
116 |
103 |
91.9 |
81.7 |
68.0 |
60.4 |
53.7 |
重型 |
238 |
218 |
199 |
172 |
159 |
146 |
135 |
125 |
15 |
109 |
101 |
91.5 |
77.2 |
68.0 |
60.4 |
53.7 | |
特重型 |
232 |
212 |
193 |
167 |
152 |
137 |
125 |
114 |
114 |
99.6 |
98.6 |
82.6 |
69.3 |
65.2 |
58.8 |
53.1 | |
連續(xù)型 |
177 |
158 |
142 |
127 |
122 |
99.7 |
90.0 |
80.5 |
66.4 |
59.6 |
53.3 |
47.4 |
42.1 |
35.1 |
31.1 |
27.7 |
注:承載能力表僅列出兩種不同輸入轉速情況下,高速軸許用功率,其他情況可近似參考此表。但當每一工作循時間t工作>20分鐘時,應按連續(xù)型選用,有尖峰載荷的,要選比連續(xù)型大2~3.5倍。
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