查询词典 acetic acid

The corrosion and electrochemical behavior of 316L stainless steel in acetic acid solutions at 85℃has been investigated.

16L不锈钢在常温下对醋酸有很好的耐蚀性，但是在高温特别是含卤素离子的醋酸溶液中常常会发生点腐蚀l周。

Nearly his whole belly of alcohol has change into acetic acid.

他一肚皮的酒几乎全化为了醋酸。

The synthesis of aniline from benzene and hydroxylamine hydrochloride in acetic acid–water media under mild conditions was also studied. Using NaVO3 as the catalyst, its catalytic performance in the amination was investigated in detail.

本文还采用盐酸羟胺为胺化剂，考察了温和条件下醋酸-水介质中苯与盐酸羟胺合成苯胺的反应。

Methods: Asarum volatile oil was obtained through steam distilla-tion.Mice writhing response induced by ip 0.8 % acetic acid was adopted to observe the analgesia effect of asarum volatile oil.

用水蒸气蒸馏法提取细辛挥发油成分，将其配制成不同剂量组，检测乙酸致痛小鼠脑组织和血清中NO、PGE2、MDA含量以及NOS和SOD活性。

If difficulties are encountered in filtering the hot acetic acid solution through filter paper, an asbestos filter may be prepared and used to advantage.

如果遇到困难在过滤热醋酸溶液通过过滤纸，石棉过滤器可编制和使用的优势。

The effects of molar ratio of benzyl alcohol to acetic acid,reaction time,and the amount of catalyst and its reusability on esterification yield were discussed.

结果表明，乙酸苄酯最适宜的合成工艺条件为：酸醇摩尔比2∶1、催化剂用量3.5%、带水剂用量40%、反应时间6 h。

The results showed that the optimal conditions for synthesis of benzyl acetate were: the molar ratio of acetic acid to benzyl alcohol was 2∶1,the amount of the water carrier was 40%,the amount of the catalyst was 3.5%,and reaction time was 6 h.

结果表明，乙酸苄酯最适宜的合成工艺条件为：酸醇摩尔比2∶1、催化剂用量3.5%、带水剂用量40%、反应时间6 h。

Accordingly, the selection of quality grape, proper control of oxygen in grape wine production, and asepsis treatment before bottle-filling are necessary measures to restrain the growth of acetic acid bacteria.

筛选优质葡萄原料，在生产过程中，控制氧气及灌装前进行除菌处理可以控制醋酸菌的生长。

Tu acetate true erosion after the image is not of major change, and erosion Tu pseudoaneurysm after acetic acid is formed easily,"GRAPE BUNCH" change.

涂醋酸后真性糜烂的图像不发生大的变化，而假性糜烂涂醋酸后则易形成&葡萄串&改变。

Castor seeds were degreased with 3 kinds of solvents including petroleum ether, aether and methylene chloride, and ricins were extracted from the defatted castor cake with acetic acid solution. And the rat-killing activities of 3 kinds of ricins were compared in the rat-killing activity test.

方法］用石油醚、乙醚、二氯甲烷3种溶剂分别对蓖麻粗籽进行脱脂后，用醋酸水溶液从脱脂的蓖麻饼中提取蓖麻毒蛋白，通过杀鼠活性试验比较3种蓖麻粗毒蛋白的杀鼠活性。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。