Research showed that the catalyst activity decrease sharply when the reaction temperature decline under 400 ℃.

The influences of reaction temperature and amount of sulfonating agent on sulfonating reaction were investigated.

考察了反应温度、磺化试剂用量对磺化反应的影响.

Furthermore voltage, reaction temperature and amine mass concentration are important exterior factor which effect electrolysis.

此外,电压 、 反应温度、胺的质量浓度等均是影响反应的重要外部因素.

The effects of the, as the additives and their quantities and the reaction temperature , were investigated.

文中考察了添加剂的用量及反应温度对反应的影响.

The secondary protolytic cracking is not very sensitive to the reaction temperature.

二次质子化裂化反应对温度不敏感.

Static adsorption showed that the adsorption effect was related to reaction temperature.

静态吸附结果表明,反应温度对纤维的吸附效果有影响.

Through experiment we discussed the preparative condition and came out with methods of mono-Grignard Reagent preparation.

通过实验讨论了它们的制备条件,提出了 单格 氏试剂的两种制备方法.

Study the technologic conditions of preparing Grignard reagent benzylmagnesium chloride under ultrasonic condition.

研究超声波法制备格利雅试剂氯化苄基镁的工艺条件.

Di-Grignard Reagent and mono Grignard Reagent were prepared using 1, 4-dibromobutane.

以1, 4- 二溴丁烷为原料,分别制备了双格氏试剂和单格氏试剂.

The article summarizes the preparation. structure and chemical nature of Grignard reagent.

本文综述了格氏试剂的制备, 结构及其在有机化学中的应用.

Shanxi Xinzhou Chemical Reagent Factory, established in 1971, has a production history of thirty years.

山西省 忻州市 试剂化工厂建于一九七一年, 已有三十年的生产历史,是全国最大的醋酸钠生产厂家.

This base will focus on the developing of electronic chemical products, chemical reagent, biological chemistry etc.

该区域重点发展电子化学品 、 化学试剂 、 生物化工等产业.

The 2 D-X chemical reagent resin-reinforced was used to modify the palm fibers.

采用环保型2D-X树脂增强试剂对棕叶纤维改性,以增加湿强.

Shopping should be clear advice, can not be a tax rebate would be lost.

购物时要咨询清楚, 否则不能退税就会受到损失.

Self-and proxy tax, a tax rebate relations are not the same apply when certain clear.

自营和代理纳税 、 退税关系不一样,办理时一定搞清楚.

China needs to improve its tax rebate system.

五是退税机制亟待完善.

Many papers have discussed the relationships between recall ratio and precision ratio.

有多篇文章讨论了查准率和查全率之间的种种关系.

Voluntary stop of sales and recall from consumers.

自愿停止销售,并从消费者手中召回.

Voluntary stop of sales, recall from consumers and destruction by an importer.

进口商自愿停止销售该产品, 此外从消费者手中召回并销毁缺陷产品.

Voluntary recall from consumers and corrective actions taken by the importer.

进口商自愿从消费者手中召回缺陷产品并采取补救措施.

It is a decigone beyond recall.

那是一项无法挽回的决定.