英汉例句

• it was shown that:①taking chromic acid anhydride as oxidant instead of potassium permanganate, the productive efficiency was 77%(64%in literature).

  改进内容及结果：①改用铬酐代替高锰酸钾作为氧化剂，产率为77% （文献值6 4% ） ；

• for improving epoxy-frp thermal stability and securing its processability, liquid acid anhydride curing system is adopted.

  为了提高环氧酸酐固化体系的耐热性，同时保证工艺操作的方便，采用液体酸酐混合是有效的方法。

• hardness and temperature, current density, chromium content of sulfuric acid anhydride and are closely related.

  铬层软度与温度、电流密度、铬酐及硫酸的含量都有紧密亲密的干系。

• the preparation methods including fatty acid anhydride method, fatty acid chloride method, transesterification method, etc, are reviewed, and their advantages and disadvantages are analyzed.

  本文系统地介绍了长链脂肪酸淀粉酯的性质、合成方法和应用领域；

• acid anhydride groups are grafted onto abs molecular chains by reaction processing.

  用反应加工的方法可在abs分子链上接枝酸酐基团。

• in this article are discussed the effects of three kinds of acid anhydride curing agents on the casting technology of epoxy resins as well as on the properties of cured resins.

  本文着重探讨用于环氧浇铸的三种酸酐固化剂对浇铸工艺及其固化物性能的影响。

• by selecting or synthesising polyether polyol, and changing rigid foam formulations, the application of benzoic acid anhydride polyester polyols in polyurethane rigid foam is introduced in this paper.

  通过选择或合成聚醚多元醇，调整聚氨酯泡沫配方，介绍了苯酐聚酯多元醇在聚氨酯硬泡中的应用。

• the organic compounds are mainly benzoic acid anhydride , benzophenone, and so on.

  生成的有机化合物成分比较复杂，主要成分有苯甲酸酐、苯甲酮等。

• structure of citric acid anhydride was proved to be five-number cyclo-anhydride by ir spectrum and its molecular 174.

  产品分子量为174，红外光谱证明产品为五元环状酸酐。

• bathed on the heating, salicylic acid dissolved immediately, sulphuric acid anhydride and acetylcholine would be complemented when incomplete dissolution.

  水浴上加热，水杨酸立即溶解。 如不全溶解，则需补加浓硫酸和乙酰酐。

• phosphorous acid is the acid anhydride of orthophosphoric acid (h 3 po 4 ).

  五氧化二磷是正磷酸（h3po4 ）的酸酐。

• at least one of the cathode, the anode, the separator, and the electrolytic solution contains a sulfone compound having an acid anhydride group and a sulfonyl group.

  正极、负极、隔膜以及电解液 中的至少一种包含具有酸酐基和磺酰基的砜化合物。

• the performance of the reaction using an acid anhydride as an acyl donor was compared with that using its corresponding free acid.

  对分别使用酸酐和相应的游离羧酸作酰基给体时的反应性能进行了比较。