查询词典 fluoride

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。

Reaction mechanism for 11,1,2-tetrafluoroethane preparation is carried out through gas phase fluorination by hydrogen fluoride over chromium-magnesium fluorination catalysts with trichloroethylene as main materials and dynamics models are set up.

研究了以三氯乙烯为主要原料，在铬镁氟化催化剂存在下，用氟化氢气相氟化制备1，1，1，2-四氟乙烷的反应机理，建立了动力学模型。

Fluoride is an important element in the mineralization of bone and teeth.

氟化物是骨骼和牙齿矿化的重要物质。

Objective To observe the effect of overdose fluoride on the expression of enamelin in rat mandibular incisor.

目的研究过量氟对大鼠下切牙发育过程中釉蛋白表达的影响。

This includes brushing your teeth at least twice a day with toothpaste that contains fluoride and flossing or using interdental brushes to clean in between the teeth daily.

这包括刷你的牙齿，至少一天两次与牙膏含有氟和使用牙线或牙间刷清洁之间的牙齿，每天。

This is best carried out by thorough brushing with a fluoride containing toothpaste and cleaning in between the teeth with dental floss or interdental brushes.

这是很重要的，以消除菌斑从牙彻底一天两次，这是最好进行彻底的刷牙与氟化物牙膏和清洁之间，牙齿与牙线或牙间刷。

In addition to regular dental visits, the ADA recommends eating a well-balanced diet, maintaining daily oral hygiene by brushing teeth twice a day with fluoride toothpaste and cleaning between teeth at least once a day with floss or an interdental cleaner.

除了经常性的牙科访问，阿达建议进食良好的均衡饮食，保持口腔卫生，每天由刷牙，每天两次与含氟牙膏和清洁牙齿之间，至少每天一次与牙线或一间清洁。

The fluoride is accumulated from seawater, which is prosecutedmaily in the form of ion exchange.

氟的积聚不仅来自海水，且主要是以离子交换吸附的方式进行。

Finishing treatment: sanding fabric, wrinkle-free, shine, spill-resistant, anti-fouling, anti-oil, anti-static,(DuPont additive, iron lung fluoride).

染整处理：面料磨毛，起皱，油光，防泼水，防污，防油，抗静电，

The conditions and mechanism of removing fluoride ions from water by activated meerschaum have been investigated in this paper.

对海泡石除氟条件及机理进行了实验探讨。结果表明，海泡石经过活化改性后，具有降低水中氟离子含量的作用。

I want to be a big fish in a small pond.

我要做一条在小池塘里的大鱼。

While the software functioned well, we did not feel the same about their customer support!

虽然该软件运行良好，我们没有同样的感觉他们的客户支持！