Its body flips and spins, guarding itself with its altogether more sturdy metal casing.
它不断翻动和旋转，用更坚固的金属外壳保护自己。
The feeders may be set in different modes, and are preferably connected to both the metal casing and one tubular conductor through insulator in the metal casing.
馈电器可以有多种设置方式，其中优选是使馈电器通过绝缘体穿过金属外壳且馈电器两端分别与金属外壳和管状导体相连接。
In order to get more accurate logging data, it is very important to do research on the influence rule of metal casing and cement sheath to cross-well electromagnetic logging.
为了得到更精确更趋于实际的测井数据，研究套管和水泥环等对井问电磁测井的影响规律具有非常重要的意义。
In order to get more accurate logging data, it is very important to do research on the influence rule of metal casing and cement sheath to cross-well electromagnetic logging.
为了得到更精确更趋于实际的测井数据，研究套管和水泥环等对井问电磁测井的影响规律具有非常重要的意义。
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