一管内定位线圈和具有实质上是对线圈的轴同步纵轴。
A tube is positioned within the coil and has a longitudinal axis that is substantially coincident with the axis of the coil.
通过对模数、定位线和中心线的研究，可以更精确计算工程量。
The quantities of the works can be calculated more accurately through the study of the module the positioning line and the center line.
雷迪公司的线缆故障测试产品能快速定位线缆断裂和绝缘层老化。
Radiodetection's cable test products quickly locate problems such as breaks or deteriorating insulation.
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