releasing sucker rod overshot的意思|示意
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抽油杆松脱
releasing sucker rod overshot的网络常见释义
松开式抽油杆打捞筒 ... 钻杆打捞矛 bull dog spear 松开式抽油杆打捞筒 releasing sucker rod overshot 打捞矛 fox trispear; trip spear; tripspear ...