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| 孔型锁口 (【技】闭口孔型中用来隔开孔型与辊缝的两轧辊间的缝隙。它的作用是控制轧件断面形状，便于闭口孔型的调整。) | |||
| parting of pass: 1 phrase in 1 subject |
| Technology | 1 |
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