加快国内外标准接轨。

Speed up the domestic and international standards.

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用 正己烷内标法或标准气体外标法进行检测。

Then-hexane internal standard method or the standard gas external standard method is used for detection.

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用 正己烷内标法或标准气体外标法进行检测。

Then-hexane internal standard method or the standard gas external standard method is used for detection.

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