必须的

However, non-governmental exchanges and cooperation is essential.

但是民间的交流与合作是必须的。

In such cases, the Agency may ask the notifier to provide additional necessary information.

另外化学局可以要求申报者提供补充的必须的信息。

But the number of DAergic neuron differentiated from NSC spontaneously was very few in vivo or in vitro.

但无论是在体外体外实验中没有必须的因素干预情况下，NSC自然分化为多巴胺能神经细胞占细胞总数的比例极低。

You can certainly create arrays in which there are no gaps in the numbering of elements, but you are not required to.

当然你可以创建没有间隙的数组，这并不是必须的。

It is no doubt that numerical analysis and evaluation is extremely necessary.

显然定量的分析和评价十分必要和必须的。

This procedure is obligatory for all business and corporate clients of bank.

这项程序必须的，是银行针对所有交易和公司客户的

Social and economic rehabilitation as well as protective employment obtainment are necessary in solving the problems.

开展麻风受累者的社会经济康复和保护性或福利性就业政策对于麻风残疾病人是必须的。

Group 2 is injected once every week.

因此扩张后维持相当的时间是必须的。

While it isn't a required standard, it is part of code optimization.

虽然这并不是必须的标准，但这却是代码最优化的一个部分。

A well thought out plan is the pre requisite for achieving any super ordinate goal.

经过严密思考的计划对于达到任意正确目标是必须的。

The concept of equivalent rotationally rigidity is offered and the formula of rotationally rigidity is obtained.

主要做了如下几个方面的工作：对伸臂位于顶部的单层框架—筒体模型进行分析，提出了等效转动约束的概念和转动约束刚度的表达式。

Male cats normally do not need aftercare with the exception of the night after the anesthetic.

男猫通常不需要善后除了晚上的麻醉。