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| 螺旋配量器 | |||
| 计量型螺杆 | |||
| 计量螺杆 | |||
| 计量螺旋绞刀; 计量螺旋 | |||
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metering screw : 3 phrases in 2 subjects |
| Metallurgy | 2 |
| Plastics | 1 |
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