异丁

The comparison on the initiation activity of vanadyl polycarboxylate with vanadyl iso-butyrate and vanadyl sulfa-te (low molecular non-homologue) was made.

在引发活性方面对聚羧酸氧钒、异丁酸氧钒和硫酸氧钒作了对比。

Then MAL is converted into methylacrylic acid through oxidation. At last, MAA is esterified to MMA with methanol.

日本旭化成公司以异丁烯为原料，得到MAL后直接氧化酯化的方法正在开发中。

A four ball tester was used to evaluate the antiwear and extreme pressure properties of antimony dialkyldithiophosphate with friction reducer containing phosphorus, chlorinated paraffin(T301) and sulfurized isobutylene (T321), and their synergistic effects.

利用四球试验机评价了二烷基二硫代磷酸锑与含磷摩擦改进剂、氯化石蜡(T301)、硫化异丁烯(T321)3种添加剂的极压和抗磨性能，以及它们之间的极压和抗磨协同作用；利用市售演示仪评价了SbD-DP、T301和T321之间的协同抗擦伤能力。

D-Pantothenyl alcohol, also called ortho-vitamin 85, is an important nutrition suppled substance. It has been widely applied in the field such as medicine, cosmetic, foodstuff, feed additive, and so on. The preparation of D-pantothenyl alcohol and the optimization of key factor are discussed mainly in this paper. It mainly includes three section.In the first section, with formaldehyde, isobutyl aldehyde and diethyl oxalate as the starting materials, D-pantolactone is prepared via three steps including condensation, catalytic hydrogenation and physical resolution. The specific rotatory power of the product is consistent with imported product.

D-泛醇，俗称原维生素B_5，属维生素B旋类营养增补剂，广泛应用于医药、化妆品、食品、饲料等领域，本文着重探讨了其制备及关键因素的优化，主要内容可分三部分：第一是D-泛内酯的制备，先以甲醛、异丁醛和草酸二乙酯为起始原料合成酮基泛内酯，再经催化氢化得到DL-泛内酯，然后通过物理拆分获得D-泛内酯，得到产物的比旋光度与进口产品基本一致。

For the bargellini reaction, acetone and chloroform was used instead of a--bromobutyrate to cut the cost.

同时，以丙酮和氯仿代替a-溴代异丁酸酯，显著降低生产成本。

In conclusion, the experiment was selected four objects of study, including citric acid, malic acid iso-butyric acid and honey material.

本次试验选定柠檬酸、苹果酸、异丁酸和甜蜜素作为试验对象；选定年龄、胎次、产犊日期、体况标准和采食量相近的16头荷斯坦奶牛作为试验动物；以玉米秸秆作为试验日粮；采用四因子、两水平正交试验设计。

The polymer particles were prepared by copolymerization of phthalic aldehyde, allyl mercaptan and ethylene glycol dimethacrylate after heating. The fluorescence intensity of the polymer particles was very weak.

利用邻苯二甲醛与烯丙基硫醇、乙二醇二甲基丙烯酸酯在偶氮二异丁腈引发下热聚合制得了一种新型聚合物颗粒。

In the pharmaceutical aisles, I found 61 varieties of untan oil and sunblock , and 80 different pain relievers —aspirin, acetaminophen, ibuprofen; 350 milligrams or 500 milligrams; caplets, capsules, and tablets; coated or uncoated.

在药品的过道上，我发现有61种不同的untan 油和防晒霜，还有80种止痛药——阿司匹林，乙醯胺基酚，异丁苯丙酸，还分350毫克和500毫克；还有囊片，胶囊，药片，其中还分有有包裹层和没有包裹层的。

These tests showed pu-erh performed at least as well as clofibrate, the most advanced medicine for the purpose, without the drug's side effects.

这些试验表明普洱茶在这方面的功效不差于专门用于治疗高血脂的药物--对氯苯氧异丁酸乙酯，而且没有这种药物的副作用。

Linear free energy relationships exist between the stability of the ternary mixed ligand complex compounds and the base strengths of the a-amino acids and with the stability of the parent binary complex compounds as well.

此处应用的α-氨基酸为L-脯氨酸， D，L-α-氨基异丁酸， L-异亮氨酸， L-缬氨酸，甘氨酸、L-丝氨酸、L-苏氨酸，结果发现，三元混配合物的稳定性与α-氨基酸的碱性强度间以及与原来的二元络合物间存在有线性自由能关系。

The labia have now been sutured together almost completely.The drains and the Foley catheter come out at the top.

此刻阴唇已经几乎完全的缝在一起了，排除多余淤血体液的管子和Foley导管从顶端冒出来。

To get the business done, I suggest we split the difference in price.

为了做成这笔生意，我建议我们在价格上大家各让一半。