But nowadays tests for magnetotelluric surveying equipment can not quantitative detect overall system and there is no uniform technical standards.
然而现行的大地电磁测深设备的检验办法既缺少整个系统的定量检测，也没有统一规范的技术标准。
But nowadays tests for magnetotelluric surveying equipment can not quantitative detect overall system and there is no uniform technical standards.
然而现行的大地电磁测深设备的检验办法既缺少整个系统的定量检测，也没有统一规范的技术标准。
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