必要条件

By the necessary conditions for the occurrence of boilover, a new fighting method, circulated cooling method, was proposed to prevent the formation of boilover fire.

本文还从扬沸火灾形成的必要条件出发，提出了阻止扬沸火灾发生的新技术途径——循环冷却法。

So it is necessary toobtain the excited states data of alkali molecules such as collisionaldepopulation ,predissociation and collisional transfer rates .

所以获得激发态碱分子的碰撞去布居、预离解率及碰撞转移的实验数据是研制这种新型激光器的必要条件。

One of the necessary conditions of the initial cracking due to thermal fatigue is that the material on high temperature side has been deformed compressively and plastically, which is different from the cracking due to common fatigue.

热疲劳裂纹张开的一个必要条件是高温侧材料在升温过程产生压缩塑性变形，这与普通疲劳裂纹不同。

Since the introduction of the Single UNIX Specification, there has been a single, open, consensus specification that defines the requirements for a conformant UNIX system.

自单一UNIX标准的传入，其已经是一个单一的，开放的，大众认同的标准，其详细定义了一个UNIX的系统构架的必要条件。

We prove that a diagram can be drawn with conicoid sequentially if and only if it can be described by a set of triangular equations of degree less than nine.

同时证明了一个三维几何图形可以用平面、球面和圆锥曲面构造出来的充分必要条件是这个三维几何图形可以用一个三角化的次数小于9的代数方程组来描述。

Thus the idea of language as a potentially distortive or alternative medium between us and the world simply cannot be cashed out, given Davidson's understanding of the necessary conditions for interpretation.

如此一来，'语言作为在我们和世界之间的潜在之变形或可选中介'这个想法就完全不能兑现，如果给定Davidson的理解之必要条件是解释的话。

Under the conditions of q=2, G is a finite group of order mn ,where both m and n are odd prime numbers, the splitting is μ-1 , the necessary condition and sufficieat condition for the existence of such duadic codes are presented.

考虑q＝2，G为mn阶非阿贝尔群且劈分为μ－1的duadic码存在的充分条件和必要条件。

In this paper, a new method for aspheric conicoid machining is offered by using normal equidistance line offsetting methods.1、Obtain ecumenic equation of normal equidistance offsetting line methods for aspheric conicoid machining induced from mathematical equations of paraboloid, hyperboloid and ellipsoid surface; reason the conditions for avoiding of tool intervening.2、Bring forward the general design project for machining tool together with some primary components based on the conception of non-sphere conicoid machining by using normal equidistance line offsetting.

其主要内容有： 1、进行了二次旋转曲面法线等距离线加工方法的理论研究，分别建立了抛物面、椭球面和双曲面的法线等距离线模型，得出了避免加工过程中刀具干涉的必要条件。 2、根据法线等距离线加工法的理论，确定了二次旋转曲面加工机床的总体设计方案，并进行了零部件的选择。

Learning interest is the necessary condition for the development of the creativity and deep interest is one enormous motivity, because it can absorb students' attention, elaborative faculty and imagination, can drive students to think, to observe and to study actively.

学习兴趣是创造能力发展的必要条件，浓厚的兴趣是一种巨大的动力，能吸收学生的注意力、思考力和想象力，驱使学生去积极思考、观察和研究。

Emulative election is a political party play is due functional requirement.

竞争性选举是政党发挥应有功能的必要条件。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。