必需的

It contains all the information necessary to access or invoke the module.

它包括所有必需的信息去访问或者调用模块。

In short the term refers to three essential amino acids – leucine, isoleucine and valine.

总之这个词是指三个必需的氨基酸-亮氨酸，异亮氨酸，缬氨酸。

But it is also a matter of necessity.

但这同样也是必需的。

Familiarity with multivariable calculus, linear algebra, and probability and statistics is required.

熟悉多变量微积分，线性代数，概率和统计是必需的。

Preoperative lordosis of the cervical spine is a prerequisite for laminoplasty, and maintaining postoperative lordosis is also important for decompression of the spinal cord.

术前颈椎前凸是实施椎板成形术前所必需的，且保持术后前凸对于脊髓减压也很重要。

In that case, cleaning and maintaining is very necessary.

在那种情况下，清洁和保养是十分必需的。

This is the only mandatory part of the specification.

这是该规范唯一必需的部分。

Selenium is a microelement which is essential to mammalian and hunman being.

硒是人及哺乳动物必需的一种微量元素。

OBJECTIVE: Selenium is an essential micronutrient.

目的硒是人体必需的微量元素之一。

However, the mnemonics are not necessary for a complete automated analysis.

不过，对于一个完全自动化分析来说，助记码不是必需的。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。