They are contact measurement, which must produce a large error caused by the contact measurement, so may affect the exact position of some important parameters in the oil and gas field development.
它们都是接触式测量，不可避免的会产生相当大的接触式测量误差，从而影响油气田开发上一些重要参数的精确定位。
They are contact measurement, which must produce a large error caused by the contact measurement, so may affect the exact position of some important parameters in the oil and gas field development.
它们都是接触式测量，不可避免的会产生相当大的接触式测量误差，从而影响油气田开发上一些重要参数的精确定位。
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