depth indicator

基本解释

Cooling system , Working light, Spindle power down feeder , depth indicator , 2 speed motor, vices.
双速电机，冷却装置，照明灯，主轴机械进给装置，平口钳，电子显示深度尺。
A joint of tubing used in a workover or completion tubing string that serves as a position or depth indicator.
在修井管柱或完井管柱中用作一个位置指示器或深度指示器的一节油管。
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According to the well logging requirement, the embedded system with 80C196, interface circuit, and the circuit of signal adjusting on the well depth and indicator diagram are designed.
根据测井要求，设计了80C196单片机系统及其外围接口电路，并分别为液面反射波信号和功图信号设计了调理电路。

Their reasons for doing so seem to be that the depth of the colour is a good indicator of how free a male is of parasitic infection, and thus how good a father he will make.
ECONOMIST: Birds do it, bees do it The