The yield of the pseudoionone and ionone was 96. 2% and 97. 6% respectively.

反应条件温和,周期短,缩合反应的产率达96.2％,环化反应的产率达97.6％.

Experimental results show that the reaction acts up on transannular-surroundings electron transfer reaction mechanisms.

实验表明，此反应遵循外环外界电子转移反应机理。

How did your mother react to the news? She reacted by getting very angry.

你妈妈这个消息的反应怎样？她的反应是非常生气。

The catalytic gas liquid isotope exchange reaction is a good method to prepare tritiated triptolid.

采用催化气液同位素交换法制化雷公藤甲素,探讨反应时间和反应介质反应产额的影响。

The plane responds well to the controls.

这飞机操纵反应灵敏。

The response to our appeal was tremendous.

吁的反应极大。

Reaction of Dianion 8 with 4 To Form 7 and Enol 10.

反应形成酸根84710和烯醇.

The modificative for coke can decrease CRI(Coke Reaction Index),improve CSR(Coke Strength after Reaction).

焦炭改性剂可以改善焦炭的热性能,即降低焦炭的反应性,提高反应后强度。

This proved that nitrourea was a more suitable reactant than urea to synthesize Keto-RDX.

由此表明在生成RDX酮的反应过程中，硝基脲上比脲更为合适的反应形式。

An acid can react with a base to form a salt.

酸和碱起化学反应成盐。

Only her quick reaction prevented an accident.

她的快捷反应避免一次事故。

A meltdown at the reactor had only just been avoided.

险些发生核反应堆熔毀事故。

Their reaction to the joke is to laugh.

他这个笑话的反应是笑。

Widespread reactions of this sort could steepen its dive.

普遍这类反应将会加快它的跳水。

I had to concede that I'd overreacted.

不得不承认反应过度。

This case should be classified into promyelocytic leukemoid reaction or marrow leukemoid reaction.

分析病例及文献，本例属于急性早幼粒细胞型类白血病反应，也符合骨髓类白血病反应的特点。

An ageing nuclear reactor is an accident waiting to happen.

老化的核反应堆早晚会出事故。

The audience reacted readily to his speech.

观众他的讲演立即起反应。

The audience weren’t very responsive and the jokes fell a bit flat.

观众反应平平，那些笑话没有太大效果。

A nuclear reactor is the apparatus in which atoms are split.

核反应堆是分裂原子的装置。