1、
The biochemical oxygen demand ( BOD 5 ) of 47 substituted benzenes were determined.
测定了47种取代苯类化合物在松花江水中的5日生化需氧量 ( BOD5 ) .
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2、
The biodegradability of 27 substituted benzenes in the Songhua river water by BOD technique.
测定了27种取代苯类化合物在松花江江水中的生物降解性.
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3、
The lack of any methoxysubstituted benzenes would preclude any insertion process taking place.
例中没有甲氧基取代的笨,就应当排除任何嵌入反应的发生.
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4、
This paper studies the method of determine benzenes in water capillary column G C.
研究了用气相色谱毛细管柱分析水中苯系物的方法.
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