A method was established for trace BHC,DDT and heptachlor eqoxide in water sample by gas chromatography-mass spectrometry with solid-phase extraction.是什么意思_A method was established for trace BHC,DDT and heptachlor eqoxide in water sample by gas chromatography-mass spectrometry with solid-phase extraction.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句