不可缺少的

Enterococcus was the natural flora comes from enteron of silkworm.

它直接参与了宿主的多种生理代谢活动，是宿主正常生理活动不可缺少的重要组成部分。

The construction of lighting culture cause, which has national, regional and epochal characteristics, is an absolutely necessary basis, and promotion for the development of modern society.

建设具有民族、地域和时代特色的光文化事业，是现代社会发展不可缺少的基础和推动。

Eustachian tube inspection is also indispensable step.

咽鼓管的检查也是不可缺少的一步。

The mutual integration, containing, and development among different national cultures are a factor and a form of combination essential to the emergence of an ethnic group's folk culture and art.

各民族文化相互交融、包含和发展是某种民族民间文化艺术的产生所不可缺少的因素和结合形式。

Land is a basic productive factor so that land market system is an important part of the socialist market system.

土地是基本的生产要素，土地市场是市场体系中不可缺少的重要组成部分。

In the diagnosis ofmechanical failure, the vibration signal is an indispensable part of the basis for judgment.

在机械故障的诊断中，振动信号是不可缺少的重要判断依据。

It is of great significance to study intelligent fault diagnosis method of rotating machinery.

旋转机械是国民经济建设中不可缺少的关键设备，对其故障诊断方法的研究具有重要意义。

This is where genetic engineering is indispensable to feminism.

这是遗传工程对女权主义的地方是不可缺少的。

The management of carders' personal files is an integral part of our national carders' archives as well as an important element of national file management.

干部人事档案工作是党和国家干部人事工作不可缺少的一部分，也是国家档案工作的重要组成部分。

Especially in the process craft the detecting of the flowage is indispensability .

尤其是过程工艺中，流量的检测是不可缺少的。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。