For insulation test on traction power supply equipment in electrified railway, a new type of synthetic measuring instrument is developed.

针对电气化铁道牵引供电设备的绝缘试验，研制了一种新型便携式绝缘综合测试仪。

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A automatic synthetic parameter measuring instrument used for the piston groove, including its structure, measuring principle, main parts and technical level is introduced.

介绍了活塞环槽自动综合检测仪的仪器结构、测量原理、主要组成部分以及达到的技术水平。

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