查询词典 benzene
- 与 benzene 相关的网络例句 [注：此内容来源于网络，仅供参考]
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The homologs of benzene are those containing an alkyl group or alkyl groups in place of one or more hydrogen atoms.
苯的同系物是指是那些苯环上有一个或多个氢原子被一个或多个烷基替代而构成的物质。
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The homologs of benzene are those containing an alkyl group or alkyl groups in place of one or more hydrogen atoms.
苯的同系物是指分子中只含有一个苯环，由一个烷基团或多个烷基团取代了苯环上一个或多个氢原子。
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The homologs of benzene are those containing an alkyl group or alkyl groups in place of one or more hydrogen atoms.
苯的同系物就是含有一个苯环，并且与苯相差若干个CH2原子团的一系列物质。
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The homologs of benzene are those containing an alkyl group or alkyl groups in place of one or more hydrogen atoms.
苯的同系物是指分子里含有一个苯环，组成符合CnH2n-6（n≥6）的环烃。
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The homologs of benzene are those containing an alkyl group or alkyl groups in place of one or more hydrogen atoms.
苯环上一个或多个氢原子被烷基基团所取代的化合物称为芳香族同系物。
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The homologs of benzene are those containing an alkyl group or alkyl groups in place of one or more hydrogen atoms.
苯的同系物是指分子里含有一个苯环，组成符合CnH2n-6（n≥6）的环烃。1很正确，2有点过了！金币+ 5 个万客币+ 5 个
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Objective:To investigate the air pollution of decorating material markets to study the health effect of working people exposure to low concentration of formaldehyde and benzene homologues in that place.
目的：了解建材市场的主要污染物及其污染水平；研究低浓度甲醛、苯系物暴露对从业人员的健康影响。
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Treatment of children with ADHD drugs more, such as methylphenidate, d-amphetamine, benzene iso-mephenytoin, caffeine, such as imipramine.
治疗小儿多动症的药物较多，如哌醋甲酯，右旋苯丙胺，苯异妥英，咖啡因，丙咪嗪等。
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A new method for the separation and purification of chiral mandelic acid by heated benzene extraction and refrigeration crystal was established. The ionization constant of mandelic acid was mensurated by pH potentiometer titration.
采用pH值电位滴定法测定了扁桃酸的离解常数，采用高效液相色谱法考察了扁桃酸在不同溶剂中的溶解度曲线和在苯-水体系中于不同pH值条件时的分配率，建立了热苯萃取和冷却结晶的扁桃酸纯化工艺。
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The solubility curve of mandelic acid in different solvent and the distribute ratio of mandelic acid in benzene-water system in different pH condition were determine by HPLC. The results showed that the ionization constant pK_a of mandelic acid was 5.28, the solubility of mandeli...
研究结果显示，扁桃酸的离解常数pKa值为5.28；扁桃酸在水和苯中的溶解度曲线可分别表示为：S=38.756e0.0354t和S=0.2746e0.0649t；扁桃酸在水和苯中的溶解度差值曲线可分别表示为：ΔS/S1=0.1196t-2.712和ΔS/S1=0.3688e0.0723t；苯是最适合用于冷却结晶的溶剂；热苯萃取扁桃酸的苯水比例可选为1∶1；降低pH值有利于扁桃酸在苯中的分配。
- 推荐网络例句
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For a big chunk of credit-card losses; the number of filings (and thus charge-off rates) would be rising again, whether
年美国个人破产法的一个改动使得破产登记急速下降，而后引起了信用卡大规模的亏损。
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Eph. 4:23 And that you be renewed in the spirit of your mind
弗四23 而在你们心思的灵里得以更新
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Lao Qiu is the Chairman of China Qiuyang Translation Group and the head master of the Confucius School. He has committed himself to the research and promotion of the classics of China.
老秋先生为中国秋阳翻译集团的董事长和孔子商学院的院长，致力于国学的研究和推广。