不可缺少的

This is vital to success of her works.

这也是她的作品成功的一个不可缺少的因素。

In some phased-mission system the life of working units and their repairing time follow general distribution. It is difficult to calculate the optimization quantity of spare parts with analysable method.

1引言备件是综合保障资源中不可缺少的组成部分，是影响装备在任务期间维修保障能力的重要因素，在任务执行之前，如何确定备件携行量是一个关键的问题。

Ms Zhao, thanks for the things that you have done for us, we learnt so much from you. I would, and also believe that I will become an indispensability spark of the biodynamic agriculture in the near future.

赵阿姨，我们感谢您为我们所做的一切，从您的身上，我们看到、学会了太多太多……我愿意，也坚信自己会在有机农业这条道路上成为一簇不可缺少的火苗！

Be in what advocate quality education energetically today, regard vocal music as a artistic kind chorally, an indispensable substantial is in musical education.

在大力提倡素质教育的今天，合唱作为声乐艺术的一种，在音乐教育中是一个不可缺少的重要部分。

So that we can profit from your wonderful example and make sure that these conferences continue to bean indris pens able annual event for scientists from all over the world.

这样，我们就能够从你们成功的例子中学到好的经验来确保这些会议继续成为全世界科学家们不可缺少的年会。

So that we can profit from your wonderful example and make sure that these conferences continue to bean indris pens able annual event for scientist s from all over the world.

这样，我们就能够从你们成功的例子中学到好的经验来确保这些会议继续成为全世界科学家们不可缺少的年会。

Lakes and reservoirs are one of the most importamt water resouse,provide for people water conservancy and flood control, water using and water supply, energy supply, marine products, scenery appreciate, shipping improve, accept the row dirty water and weather regulate etc,and also can interferent the society and economy uneveluablely,they are indispensability priceless resource.

湖泊水库是人类最重要的淡水资源之一，为人们提供水利防洪、用水供水、供应能源、水产养殖、游览观赏、改善航运、接纳排污以及气候调节等多种功能，对社会和经济发展起到不可估量的作用，是人们生活不可缺少的宝贵资源。

It is system of typical management information, using computer to manage and give business laborage to the people that is the powerful management way and it cannot be cancel.

工资管理系统是典型的管理信息系统，采用计算机管理企业的工资发放是当前不可缺少的一种管理手段。

It is system of typical management information, using computer to manage and give business laborage to the people that is the powerful management way and it cannot be cancel.

摘要工资管理系统是典型的管理信息系统，采用计算机管理企业的工资发放是当前不可缺少的一种管理手段。

It is system of typical management information, using computer to manage and give business laborage to the people that is the powerful management way and it cannot be cancel.

包括：程序代码，，开题报告(10800字)工资管理系统是典型的管理信息系统，采用管理企业的工资发放是当前不可缺少的一种管理手段。

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。