必需的

Prompt diagnosis and appropriate management of subperiosteal abscess are essential to not only avoid life threatening complications but also preserve visual acuity of the patient.

立即诊断和适当处置是避免威胁生命的并发症和维持病人视力所必需的。

Among the various human qualities, none is supe rior to any other, and they are all essential for the development of the sociali st market economy.

人的素质是多方面的，各种素质无高下之分，都是社会主义市场经济发展所必需的。

Eukaryotic initiation factor 5A (eIF 5A) contains an unusual amino acid, hypusine, which is formed post translationally.

真核启始因子 5A(eIF 5A)翻译后第 4 9位的赖氨酸被修饰为一个特殊氨基酸hypusine ，后者是其发挥功能所必需的。

Ptf1a, also known as P48, is an important bHLH transcriptional factor, functioning as an integral part of a trimeric protein complex Ptf1, which is essential for fate determination and cell differentiation of pancreas.

Ptf1a，又名p48，是Ptf1转录因子的一个亚基，为胰腺命运决定与细胞分化必需的转录因子。

The data and informations are necessary to normal work for people, but most of them are separate or unorderly.

资料、信息是人们日常工作所必需的，但是它们大多是杂乱而分散的。

A certain amount of care,or pain or trouble is necessary for every man all the times .a ship without ballast is unsatable and will not go straight.

一定的忧愁、痛苦或烦恼对每个人都是时时必需的。一艘如果没有压舱物，便不会稳定不能朝着目的地一直前进

It looks as if a single unsensed thing is not required for us to do what we in fact do.

似乎一个单一的不可感物对于我们实际做什么并非是必需的。

Yohimbe increases the body's production of norepinephrine which is essential in the formation of erection.

Yohimbe增加身体的生产去甲肾上腺素所必需的形成勃起。

In pre-processing modul, we establish the geometrical models of problem and meshing with some parameters.

前处理模块建立描述问题的几何模型，输入各种必需的参数，最后由软件自动生成网络。

In this study,Using extracted total DNA from duck plague virus vaccine strain infected Chicken embryo fibroblasts cells as template, the 1.0 kb TK gene nonessential for viral replication was amplified by polymerise chain reaction and cloned into T-easy vector to obtain pGTK.

本研究从感染鸡胚成纤维细胞的鸭瘟病毒疫苗毒株中提取了总DNA，并以此为模板，利用PCR技术扩增出病毒生长非必需的TK基因(约1.1kb)，将其克隆入pGEM-T easy载体获得载体pGTK。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。