He substituted as the typist in the office.

他代替做这办公室的打字员。

Yogurt is a perfectly acceptable substitute for cream in cooking.

酸奶是烹饪用的特别受欢迎的奶油替代品。

These on reduction with NaBH4 gave exclusively cis-3-heterocycle substituted chroman-4-ols in good yields.

【文摘】3,3-Dibromochroman-4-ones on reaction with different heterocyclic secondary amines gave 3-substituted chromones.

As Mr. Sinclair was ill, Mr. Cook substituted as our teacher of chemistry.

由于辛克莱先生病, 库克先生代任我们的化学老师。

Aryl substituted polyacetylenes and their derivatives exhibit a lot of novel optical, electric, magnetic properties.

芳基取代聚炔及其衍生呈现出光电磁等许多新颖的性能。

Constituents that can be substituted for one another without loss of grammaticality belong to the same syntactic category.

可以相互替换而又不改变语法性的成分于同句法类型。

I found someone to substitute for me.

我找到人接替我。

We substitute margarine for cream because cream is fattening.

我们用人造黄油代替奶油,因为奶油会使人发胖。

Can you substitute for the singer who is ill?

你能替下那位得病的歌手吗?

In this cake mixture, you can substitute oil for butter.

在这种做蛋糕的配料中, 你可以用食用油代替黄油。

A small creeping herb(Dichondra micrantha) commercially cultivated as a substitute for lawn grass.

禾本科植，有蔓，丛生或多年生或年生；指状禾草；蔓延阿利昂花。

Mouser Electronics stocks suitable parts if you substitute a pair of 0.47uF caps for the 1uF electrolytics.

电影帽子实在有点大,但有空间,如果你把些工作,为寻求微型零件.

A comparison was made among the cure characteristics and physical properties of three different substituted thiuram accelerators in NR.

对3种不同取代基的秋兰姆类促进剂在天然橡胶中的硫化特性及理性能进行比较。

Chlorpyrifos was one kind of organophosphorus pesticides with higher efficacy and could substitute highly poisonous metham-sodium and parathion.

毒死蜱是替代甲胺磷和对硫磷等高毒农药的高效有机磷杀虫剂,在世界范围得到广泛使用。

This article is a study of methylene chloride as a substitute for trichloro-fluoromethane in producing flexible polyurethane foam.

讨论用二氯甲烷替代氟三氯甲烷进行软质聚氨酯泡沫塑料的生产。

From early on, we can start introducing woggle to our baby as a substitute for our arm support.

在爸妈与宝宝熟悉在水中活动后，可以开始使用「浮条」来代替爸妈的手，让宝宝在水中学习自主。

The synthesis of fluorine substituted saponite was explored and suceeded under mild temperature hydrothermally.Microwave-hydrothermal synthesis of sapontie was performed first time.

对于层状材料的微波水热快速合成研究也进行首次探索，发现可以在可接受的合成条件下得到具有三八面体结构的皂石。

In order to get polyaryloxyphosphazene, polyphosphazene's side chlorines are directly substituted by aryloxy of phenol using triethylamine as the bind acid agent.

然后以三乙胺为缚酸剂，使高聚氯化磷腈直接与酚类化合进行取代反应，合成标题高聚。

Isopropenyl acetate was synthesized from ketene and acetone by direct esterification using strong acidic cation-exchange resin to substitute H2SO4 as catalyst.

以乙烯酮和丙酮为原料,用强酸性离子交换树脂代替浓硫酸作为催化剂,直接酯化合成乙酰丙酮的中间体乙酸异丙烯酯。

Effective, rapid, non volatile, non conflagate, less insitation, recovery use, it is an ideal substitute of gasoline and diesel oil using for cleaning.

清洗效果好、速度快、不挥发、不燃烧,气味小,可重复使用,是替代汽油、柴油清洗发动机的安全、方便的理想产品。