查询词典 benzene

65 The methyl group on the benzene ring greatly facilitates the nitration of toluene.

苯环上的甲基使甲苯非常易于硝化苯环上的甲基使甲苯非常易于硝化。

Our results suggest that the chemical structure and number of hydroxyl groups on the benzene ring of coumarin were correlated with the effects of ROS suppression.

结果发现所有的香豆素衍生物都具有抑制黄嘌呤氧化酶活性的能力，且其抑制型态属於竞争型抑制剂。

To establish gas chromatography for the determination of benzene series in the quality control samples.

目的 建立质控样品中苯系物的气相色谱测定方法。

There are a certain relationship between the concentrations of benzene series and test season in indoor air.

室内空气中苯浓度与检测季节与一定关系，与2005、2006年相比苯浓度逐年降低。

Objective To assess the effects of three way cotalytic converter on the health risk of benzene series.

目的 比较三元催化器催化前后汽油机中苯系物排放的健康风险的改变情况，探讨健康环境风险评估方法在汽油机排放物健康效应评价中的可行性。

The mean recovery of fourteen homologous series of benzene is 85%, and the relative deviation is below 5%.

本方法对十四种苯系物的总平均回收率为85%，相对标准偏差在5%以下，最低检测限达3.25×10－9g。

Methods 54 houses were randomly chosen in Beijing to monitor their benzene series levels during Apr.

方法于2005年4—10月，在北京市随机抽取54户新装修的居民，入户监测其室内装修后半年内空气中苯系物的浓度。

All the indices met the demands of environmental quality standards of surface water and the method was suitable for the analysis and determination of benzene series in surface water.

各指标均符合地表水环境质量标准的要求，适合地表水中苯系物的分析测定。

Results The benzene series concentration of indoor air was gone down rapidly in 2 months.

结果 苯系物浓度在装修后两个月呈快速下降趋势，而降低到0.2～0.3mg/m3时，则降低趋势缓慢。

The proposed method has been applied to the analysis of samples for the benzene series and samples can be separated better and quickly.

方法用于检测环境水体中邻苯二甲酸酯类化合物，分离效果好，简便快捷，定量准确。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。