1) local necessary condition
局部必要条件
1.
The local necessary condition for a type of stochastic optimal control problem and its application to a portfolio choice problem;
一类随机最优控制问题的局部必要条件及在投资选择中的应用
2) essential condition
必要条件
1.
Several typys of alkali-aggregate reaction and its mechanism was introduced, then the essential conditions of the reaction were also pointed out.
本文介绍了混凝土的碱-骨料反应的危害,归纳了混凝土的碱-骨料反应的几种类型及其机理,依据反应进行的必要条件,提出预防碱-骨料反应的有效措施。
2.
In this paper,by using reflective function method for secondary nonlinear differential system,we obtain secondary nonlinear differential system to have the linear reflection function necessary and sufficient condition and the essential condition.
将反射函数法应用于二次非线性微分系统,得到了二次非线性微分系统具有线性反射函数的充要条件和必要条件。
3.
The effects of monsoon wind stress, continental slope topology andbottom friction as essential conditions to form monsoon upwind flow and as diagnosticcriteria are discussed.
分析讨论了季风风应力、大陆坡地形及底摩擦在产生季风逆风流的必要条件和间接逆风流诊断判据中的作用；应用季风逆风流必要条件和间接逆风流诊断判据，解释冬季风和夏季风逆风流是如何产生的。
3) necessary condition
必要条件
1.
Necessary Condition of Establishing Auto-regression Model and It′s Application;
自回归模型建立的必要条件及其应用
2.
A necessary condition for a class of elliptic equations with Allee effect
一类具有Allee影响的椭圆方程正解存在的一个必要条件
3.
Our systematic and in-depth study arrives at the full conditions and necessary conditions for the existence of double cranks of a 2-DOF planar five-link linkage.
对"杆组法"的研究思想作重要引伸和推广,发展和深化了"原动件与机架组"极端特征条件、"杆组"适应性条件的重要概念和提法,关于双固定铰链的2-DOF平面五杆机构的4种类型,通过系统、深入研究得到了其双曲柄存在的充分条件和必要条件。
4) necessary conditions
必要条件
1.
It was pointed that mechatronic-hydraulic-communicatory hardware, the controlling and management software of mixing process are the two necessary conditions of the intelligent mixer.
根据工程机械智能化的发展趋势和搅拌设备的工作特点,分析了搅拌设备智能化的关键技术,认为机电液信一体化的硬件条件、可靠的作业过程动态控制和管理软件,是实现搅拌设备智能化的必要条件;在分析搅拌过程和拌筒模型化的基础上,讨论了搅拌设备智能化的主要研究任务和方法。
2.
This article discusses of the extreme the dual function,the existence of the dual function With examples,the necessary conditions and the functionals steps by esamples.
文章详细论述了关于二元函数的极值问题,实例分析了二元函数极值是否存在的原因;二元函数极值存在的必要条件和充分条件;通过实例解析了求二元函数极值的步骤。
3.
A group of necessary conditions for minimax controls of a class of retarded Volterra type integral systems with state terminal constraints are derived.
对带有终端状态约束的一类受控时滞Volterra型积分系统,导出其minimax控制的一组必要条件。
5) prerequisite
[英][,pri:'rekwəzɪt] [美][pri'rɛkwəzɪt]
必要条件
1.
A prerequisite for positive or negative quadratic form was presented and it was proved by use of definition.
本文给出了二次型正定(负定)的1个必要条件,并对二次型正定、负定的必要条件给出了用定义证明的方法。
2.
It proves a wonderful and simpe way to get Fermat s junior law in a purely primary way from odd primary number p | Cpk and further to obtain a set of odd prerequisite of Fermat s Guess, which is applied in the proof when = 3 and p = 5.
纯初等方式地从奇素数P|Cpk出发,先得到费尔马(Fermat)小定理,进而获得费尔马猜想的一组奇特的必要条件,并 应用于p=3与p=5时的证明,提供了一种巧妙且朴实的纯初等方法和思路。
3.
Some prerequisites are necessary for the sustainable and speedy economy growth, those are stable economy environment, sustainable accumulation of material assets and technical progress, and the innovations.
稳健经营的银行业,能够把稳定和发展、安全与效率统一起来,为中国经济持续高速增长创造必要条件,甚至还能成为中国经济持续高速增长的一个重要的引擎。
补充资料：必要条件
如果无甲必无乙，有甲则可能有乙也可能无乙，那么甲就是乙的必要条件。例如，不遵守逻辑规则必然写不出好文章；遵守逻辑规则，则可能写出好文章也可能写不出好文章。因此，遵守逻辑规则就是写出好文章的必要条件。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条