查询词典 oleum rosmarini

The result indicated that: the amount of the excess HF formed direct ratio to the yield of phosphorus pentafluoride and the optimum amount of the excess HF used is about 35%; the trickling rate of oleum shouldnt make the temperature of hexafluorophosphoric acid exceed 25 ℃ and the amount of oleum is 110% to 125% that of stoichiometry so that the content of phosphorus pentafluoride can be achieved 90%; the time and temperature of heating hexafluorophosphoric acid influenced both the yield and the content of phosphorus pentafluoride, and the optimum time should be about 30 minutes and the proper temperature was 148 to 153℃; when alcohol used asrefrigerant, the content of phosphorus pentafluoride was 94.03%, and the content can be up to 97.38%, provided that using liquid nitrogen as refrigerant.

通过实验发现，氟化氢用量与五氟化磷的产率成正比，最佳过量百分率宜在35％左右；发烟硫酸的滴加速度不能使中间产物温度大于25℃，发烟硫酸用量大于理论量10％～25％时，得到的五氟化磷纯度高于90％；六氟磷酸的加热温度对五氟化磷的产率和纯度均有影响，宜在148～153℃的范围内，加热时间应在30分钟左右；用工业酒精做冷凝介质得到的五氟化磷纯度最高只能到达94.03％，使用液氮做冷凝介质可以使五氟化磷的纯度达97.38％以上。

AIM: To investigate the therapeutic effect of Oleum Cinnamomi, volatile oil of cassia bark, on mice viral myocarditis caused by coxsackie virus B 3m(CVB 3m).

目的：研究肉桂油对柯萨奇病毒B3m(CVB3m)诱发性小鼠病毒性心肌炎的治疗作用。

Cod-liver oil; oleum morrhuae; bark soil

从鱼类的肝脏中提取的富含维生素A、D的油脂。

The influence of excess anhydrous hydrogen fluoride, the amount of oleum and its trickling rate, t...

在此过程中，本文研究了无水氟化氢过量百分率、发烟硫酸用量及滴加速度、六氟磷酸的加热时间、加热温度以及冷凝介质等因素对五氟化磷产率和纯度的影响。

The influence of excess anhydrous hydrogen fluoride, the amount of oleum and its trickling rate, the time...

在此过程中，本文研究了无水氟化氢过量百分率、发烟硫酸用量及滴加速度、六氟磷酸的加热时间、加热温度以及冷凝介质等因素对五氟化磷产率和纯度的影响。

The influence of excess anhydrous hydrogen fluoride, the amount of oleum and its trickling rate, the time and temperature of heating hexafluorophosphoric acid, and refrigerants on the yield and the content of phosphorus pentafluoride was studied.

在此过程中，本文研究了无水氟化氢过量百分率、发烟硫酸用量及滴加速度、六氟磷酸的加热时间、加热温度以及冷凝介质等因素对五氟化磷产率和纯度的影响。

Determination of total acidity, and calculation of free sulphur trioxide content of oleum.

发烟硫酸中游离三氧化硫成分的计算和总酸度的测定。

Sulfur trioxide in oleum was necessary for the reaction system.

对于甲烷液相部分氧化反应，发烟硫酸中游离的SO3是非常重要的影响因素。

Learn to calculate the concentration of sulphuric acid and oleum.

会对发烟硫酸浓度进行换算。

Objective To study the therapeutic effects of oleum curcumae wenchowensis on skin of guinea pigs damage irradiated by UVB and its mechanism.

目的：研究莪术油对中波紫外线(ultraviolet B， UVB)所致豚鼠皮肤损伤的治疗作用及其机制。

" I' d like to get some rough idea about music in the baroque ear, please."

请简要介绍一下巴罗克时期的音乐，好吗？

The results showed that the peak latency and pattern of SEPs elicited by electrical needling in LI-l1 and MP were similar. The amplitude of SEPs elicited by electrical needling in LI-l1 was higher than that of MP. There was no obvious SEPs generation when MM was electrical needling.

结果显示，电针刺激曲池穴和其邻近桡侧伸腕长肌运动点诱发性脑电波的波形和波峰时间是类似的，只是穴位的诱发性脑电波波幅较大，而电针刺激非穴位点并没有明显的诱发性脑电位。