... callipers卡钳 casing bowl套管打捞筒 casing coupling套管接箍 ...
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double-slip casing bowl 双套卡瓦打捞筒
slip casing bowl 双套卡瓦打捞筒
pump with bowl-type vaned casing 导流壳式多级泵 ; 导流壳式
casing head bowl 套管头内卡瓦座圈
pumwith bowl-aned casing 导流壳式多级泵
umwith bowl-aned casing 导流壳式多级泵
ump with bowl-type vaned casing 导流壳式多级泵
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The casing bowl incorporates features to secure and seal the upper end of the casing string and frequently provides a port to enable communication with the annulus.
套管头四通包括固定和密封套管柱上端的部件，并经常提供一个用于与环形空间连通的开口。
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