pad contact
... pad bearing 填料轴承 pad contact 极板贴井壁 pad eye 系缆环板 ...
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极板上的探测器可以在一个方向聚焦，尽可能地贴靠在井壁上。
The pad holds sensors that are focused in one direction and must be as close as possible to the borehole wall.
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用滑板或者极板使下井仪器贴井壁测量的测井方法。
Any wireline well log made by a sonde which is held against the wellbore well with a skid or pad.
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