如果该杯状固定塞脱落，驻车止动爪定位销可能在特定情况下滑移出正常位置。

If the cup plug is missing, the park pawl anchor shaft can move out of position under certain conditions.

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密闭取心工具主要由外螺纹接头、平衡活塞、限位接头、内外筒、卡箍岩心爪、定位销、密封头、及取心钻头等部件组成。

Sealing coring tools mainly consists of external threaded adapter, balance piston, limit joint, inner and outer barrel, core catcher, locating pin, sealing head and coring bit.

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所述的卡爪端面是加 工定位面，所述的中心销与定位面垂直。

The end surface of the claw is a machining positioning surface which is perpendicular to the central pin.

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