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| 引锭杆跟踪 (【技】利用脉冲信号发生器作为位置信号跟踪引锭杆的位置，用以控制引锭杆，使其按预定程序和位置操作。) | |||
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dummy bar tracing : 2 phrases in 1 subject |
| Metallurgy | 2 |
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