必要条件

The minimum requirement is the installation of external mains disconnecting device.

安装外部主要的切断装置是不可缺少的必要条件。

The freedoms of election and party competition are the necessary factors to the fledging democracy, which fully and firm democratic system.

自由的选举和政党的竞争是推动新兴民主国家政治的民主化和维系、巩固民主政治的必要条件。

And the mean lifespan of their counterpart imagoes were 9.750,10.485,48.735 days respectively,some of the female imagoes can continue breeding,but with a lower hatching rate.

德国小蠊耐饥饿能力强，水是德国小蠊生存的必要条件；食物是影响德国小蠊生长发育、繁殖和寿命的重要因子。

Telomerase activation is a key tumor marker which immortalizes cell.If a medicine blocks telomere prolonging by attenuation of telomerase activity, it could inhibit tumor cells proliferation.

因为端粒酶活化是大多数肿瘤细胞维持端粒长度并获得永生化的必要条件，如果某种药物能抑制端粒酶的活性就可阻断端粒的合成，从而使细胞退出增殖周期，达到抑制肿瘤细胞增殖的目的。

This fusion is called osseointegration, and is necessary for implants to be successful.

这种融合被称为骨结合，这是种植牙成功的必要条件。

The Word,"the," being interlined between the seventh and eighth Lines of the first Page, the Word "Thirty" being partly written on an Erazure in the fifteenth Line of the first Page, The Words "is tried" being interlined between the thirty second and thirty third Lines of the first Page and the Word "the" being interlined between the forty third and forty fourth Lines of the second Page.

前述之参议员及众议员，各州州议会议员，合众国政府及各州政府之一切行政及司法官员，均应宣誓或誓愿拥护本宪法；但合众国政府之任何职位或公职，皆不得以任何宗教标准作为任职的必要条件。

The constant form of this receptivity, which we term sensibility, is a necessary condition of all the relations in which objects can be intuited as outside us; and if we abstract from these objects, it is a pure intuition, and bears the name of space.

这种我们称之为感性的感受性的恒定形式，是对象在其中被直观为在我们之外的各种关系的一个必要条件，而如果人们抽掉这些对象，它就是一个拥有空间之名的纯直观。

The constant form of this receptivity, which we term sensibility, is a necessary condition of all the relations in which objects can be intuited as outside us; and if we abstract from these objects, it is a pure intuition, and bears the name of space.

这种接受力的不变的形式，也就是我们所说的感受力，是所有物体被直觉到外立于我们的必要条件。如果我们从这些物体抽象出来那种形式，它就是我们称为的空间。

Stemming from this knowledge, this paper proposes several eigen-analysis-based indices, which are necessary conditions, to estimate the feasibility of islanding control to power systems.

据此，提出基于特征分析的解列可行性判断方法，给出解列可行的3个必要条件，通过对若干典型系统的仿真计算，证明方法的有效性。

Thischapter proposes three concepts,i.e.,kernelled quasidifferential,star-kerneland star-differential,and establishes their operational properties.A sufficiencytheorem and a sufficiency and necessity theorem for a quasi-kernel being a ker-nelled quasidifferential are proven.Both the existence of star-kernel for a qua-sidifferentiable function and the existence of star-differential for a directionallydifferentiable function are established.The relationships between sub-and su-per derivatives and Penot differentials are discussed as well.

这一章我们引入了三个概念，即核拟微分，星核与星微分并建立了它们的运算性质；证明了拟核为核拟微分的一个充分条件定理及一个充分与必要条件定理；建立了拟可微函数星核的存在性及方向可微函数星微分的存在性并讨论了Penot微分与上、下导数的关系。

John Robbins lives with his family in Santa Cruz, California.

约翰罗宾和家人居住在加利福尼亚州的圣克鲁斯县。

The international background is mainly the economic ties among different nations tented to be widen and deepen at the peace and development times.

国际背景主要是和平与发展时代条件下的世界各国经济贸易联系的日益加深。