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The performance of the controlling switch is directly related to the safety of airman, so it's required to measure the performance!

飞控开关的性能直接关系着飞行员的生命安全，对开关的性能的测量十分必要！

In each SFS algorithm,parameters of the source direction and albedo of the surface are required.

在SFS(基于阴影的三维表面重构)各种算法中，都需要光源方向及曲面反射率。

With increasing optical thickness and albedo of the medium, the acceleration result of the algorithm was more obvious and the computation required less time.

随着介质光学厚度和反照率的增大，算法的加速效果越趋明显，计算时间大幅缩短。

Alcatel Vacuum Technology has put in place the manufacturing and service facilities required to offer high quality levels to its customers.

阿尔卡特真空技术为制造业和服务设施界的客户带来了高品质的服务。

A further advantage of this method of working is that the sodium alcoholate can very conveniently be made by mixing the sodium with a proportion of the hydrocarbon which is to be used as the solvent for the reaction and adding the required amount of the alcohol thereto.

另外这种方法还有一个优点：纳和一定比例的碳氢化合物混合在加入所需数量的乙醇可以方便制备乙醇纳，而碳氢化合物可以作为溶剂使用。

They should also be required to report the medical diagnosis of alcoholism.

他们也应该被要求上报涉及酒精中毒的医疗诊断。

If the required field is blank, an alert box alerts a message and the function returns false.

如果空了的话就会出现警告信息并返回false。

It was summoned by Pope Alexander in 1178,"so that according to the custom of the ancient fathers, the good should be sought and confirmed by many, and that with the cooperation of the grace of the holy Spirit, by the efforts of all, there should be carried out what was required for the correction of abuses and the establishment of what was pleasing to God".

它被传唤教皇亚历山大在1178年"，所以，根据习俗，古老的父亲，善良的，应该寻求和证实了很多，而且随着合作的圣灵的恩典，由各个方面的共同努力，应进行哪些是需要改正的行为，以及建立什么样的，令人感到欣慰，以神之名"。

A basic knowledge of factor analysis is required and a working knowledge of linear algebra is helpful.

因子分析的基本知识是必要的，对线性代数的工作经验是有益的。

An alias is not required, but can be helpful.

别名并不需要，但也可以是有益的。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。