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Telescope Jack

1、套筒千斤顶

套筒千斤顶: telescope jack; telescoping jack detail>>螺旋千斤顶: jacking screw; jackscrew; lifting scre.

2、筒式千斤顶

...sighting telescope 瞄准镜telescope jack 筒式千斤顶,伸缩式起...telescope joint 套管连接,插接套管接...

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