有奖纠错
| 划词

The amino-acid imidazoline amphoteric surfactant was prepared from dichloroethane and vegetable-oil fatty acid as raw materials by aminolysis, esterffication and hydroxymethylation.

烷与植物油脂肪酸料,通过氨解、酯化、羟甲化缩合反应制得氨酸类咪唑啉型两性表面活性剂。

评价该例句:好评差评指正

The proposed method was applied to extracting pure spectra and determining background of a two component system which consists of dichloroethane and propanone, satisfactory results were obtained.

本方法用于烷及丙酮中各组分红外光谱的提取,获得了满意的结果。

评价该例句:好评差评指正

用户正在搜索


classmates, classons, classpath, classroom, classwork, classy, clast, clastation, clastic, clastic rock,

相似单词


3G, 401(K), a,

声明:以上例句、词性分类均由互联网资源自动生成,部分未经过人工审核,其表达内容亦不代表本软件的观点;若发现问题,欢迎向我们指正。

  • 微信二维码

    关注我们的微信

  • 手机客户端二维码

    下载手机客户端

赞助商链接