... screw， rod drive 棒的傅动螺杆 screw threaded rod 螺纹杆 screw rod compressor 螺杆压缩机 ...
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screw stem threaded rod 螺杆
Threaded Rod & Screw 丝干及螺丝配件
The utility model provides a novel supporting pulling device which is provided with a screw rod connected with the center of an adjusting supporting body through inner threaded holes.
本实用新型提供了一种新颖的顶拔器，它有一根螺杆与调节支承体的中心内螺孔联接。
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