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| 调节用定位螺杆 | |||
| 给进螺杆; 螺杆给进器 | |||
| 调节螺杆; 平衡螺杆 (钢绳钻探用); 调节螺丝; 调节螺钉 | |||
| temper screw: 1 phrase in 1 subject |
| Technology | 1 |
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