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