查询词典 fluoride

Objective To observe the effect of sodium fluoride on immune-function.

目的 观察氟化钠对免疫功能的影响。

I like that it is fluoride free because he can safelyswallow it.

我喜欢这个牙膏因为它不含氟，我的儿子能安全的吞咽牙膏。

Our engineering staff to research and development according to customer requirements, the design and manufacture of various plastics fluoride wire products.

我们的工程人员能够按客户的要求研发、设计和制造各种氟塑料电线产品。

Longer reaction time (48 h) and increase of hydrogen fluoride and catalyst are good for fluorination.

反应后的滤渣可再生为氧化汞循环使用，回收3次，反应的转化率和选择率均大于85%。

Synthesis of trifluoromethylbenzene by fluorination of trichloromethylbenzene with hydrogen fluoride was investigated.

三氟甲基苯是一种重要的有机化工中间体，广泛应用于医药农药染料等领域。

The orthogonal design method is used for preparation of rare earth fluoride by rare earth oxide(Gd_2O_3) fluorination with NH_4HF_2 in this paper.

采用正交试验法，研究了用氟化氢铵作氟化剂直接与稀土氧化物(Gd2O3)反应，制备稀土氟化物的工艺，确定了氟化的最佳工艺条件，并进行了分析讨论。

Reaction conditions are studied, and the result shows that it is better to adopt mercuric oxide or mercuric fluoride as fluorination catalyst with reaction temperature -20~-10℃.

结果表明，采用氧化汞或氟化汞作氟化催化剂、氟化氢作溶剂较好，适宜的反应温度为－20~-10℃，较长的反应时间(48 h)和增加氟化氢和催化剂的量有利于氟化。2-氯－5-三氯甲基吡啶的转化率和选择率均可达到97%以上。

Objective To study fluoride content in bone and tooth in human and various animals with and without fluorosis.

目的 探讨氟中毒和非氟中毒的人和不同种类动物骨、牙齿中的氟含量，为地方性氟中毒防治研究提供有意义的数据。

Animal fluorosis caused by industrial fluoride pollution exists in many countries all over the world.

工业氟污染引起的动物氟中毒在世界范围内广泛存在。

The preventive effect of epidemic fluorosis is obvious after having drunk the lower fluoride water for 13 years.

该地区经过10多年的改饮低氟水后，地方性氟中毒的防治取得了较明显的效果。

The small blue capacitor has very high chances to go fully shorted compare to electrolytic capacitor which is very rare.

小蓝电容器具有很高的机会去充分地缩短了比较电解电容器，这是非常罕见的。

In the Italian campaigns of 1513 and 1515, when the Swiss won the victories of Novara and Marignan, he acted as army chaplain.

在意大利的运动， 1513年和1515年，当瑞士赢得了胜利，诺瓦拉和marignan ，他担任军队的牧师。