得使用

We have used GC to follow up the formation of epoxy acid and established the acidify condition; we have done series of parallel experiments to better the pivotal condensation reaction between acid and amine; In the cyclization step, we use cheap and available reagent-Lithium amide , rather than expensive LiHMDS, to proceed the reaction; and at last, we introduced green reagent-ozone to clear the phenyl group of nitrogen to avoid using heavy metal reagent-CAN. The total yield for this method is 29.8%.

通过GC监测，确定环氧酸的最佳酸化条件；对关键的酸和胺的缩合步骤，平行试验了多种条件；在环合一步，用价廉易得的氨基锂及催化量的HMDS代替昂贵的LiHMDS进行反应；氮上苯基的脱除采用臭氧，避免了重金属试剂-硝酸铈铵的使用，总收率为29.8％。

Acidophilus milk is produced by using Lactobacitlus acidophilus.

嗜酸乳是使用嗜酸乳杆菌而制得的。

I'm using this plaintext-only approach as it demonstrates clearly the mechanism of a finite state machine without adding the code clutter of a more complex environment.

我使用纯文本的原因是为了清晰地示范有限状态机的机制，不想增加代码以免搞得太过于复杂。

His adeptness as an interesting and challenging character in battle must match that of a magic user with ranged attack.

一个熟练的战士，在战斗中的乐趣和挑战性将完全比得上一个远程攻击的魔法使用角色。

I'm right in advising you not to be too thorough in your use of reference books.

我劝你使用参考书不要抠得太细是对的。

While such unpredictability amuses the locals, it can complicate operations for the F-22 Raptors at nearby Elmendorf AFB.

当地流传着的这种对于天气不可预见性的消遣，使得位于其附近的埃尔门多夫空军基地中F-22猛禽战斗机的使用变得复杂化。

All the calculations are done with maximum thrust available used also, with the engine in full afterburner.

所有的计算与最大的推力一起做可得的使用过的也，藉由完整的后燃器的引擎。

If you really want your body to become more accustomed to a higher temperature, cut back on the air-con use.

如果你真的想你的身体变得更习惯于较高的温度，减少了空调使用。

Cyclying became popular when B air-filled tyres began to be used.

Cyclying变得普遍，当 B 开始使用空气被填装的轮胎。

Most Sumerian literature is written by Akkadian speakers when Sumerian was an extinct language.

当苏美尔语变成一种消亡语言的时候，大多数苏美尔文献都是由使用阿卡得语的人写成。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。