必要条件

Denialists often claim that HIV has never met "Koch's postulates"- a list of conditions that must be met to prove that a particular infectious agent causes a disease, drawn up by 19th-century German scientist Robert Koch.

反对者们的理由是HIV并不满足&科赫基本原理&——19世纪德国科学家罗伯特·科赫提出的这项原理列举了一系列要证明某种疾病是由某种病原体引发所需的必要条件。

This article tries to prove that only the limited and effected and market-based government is the necessary condition for economic development.

本文试图探讨惟有有限而有效的政府、以市场为基础的政府才是经济发展的必要条件。

According to the normal theory of power separation, this paper first examines the essential of separation of powers on the American higher education legislation.

立法权在高等教育立法中占据重要的地位，它是权力实施的前提，也是立法程序展开的必要条件。

The use of campfires, once a necessity for cooking and warmth, is steeped in history and tradition.

营火的运用，曾经是野外作饭和取暖的必要条件，在历史和传统上有过很多重要的记载。

We concluded that mutual aid was essential for attaining the goal.

我们的结论是，互相帮助是达成目标的必要条件。

A second prerequisite is that uranium 235 must be present in sufficient abundance.

第二个必要条件是，铀235的含量必须够充足。

The higher order procedures and calibrators in the hierarchy are called reference systems and it is important that the reference systems are metrologically qualified.

实现检验结果准确的重要手段是建立和保证检验结果的溯源性，而开展检验量值溯源的必要条件是具备参考系统。

Then, the chemical compatibilities of the possible composition systems of the composite ceramic tool materials are computed and analyzed by means of the computer programming.

定性分析了复相陶瓷刀具材料的物理相容性，认为各组分材料的热膨胀系数和弹性模量的最优匹配，是获得同时具有较高的抗弯强度和断裂韧性的复相陶瓷刀具材料的必要条件之一。

In Chapter 5, an application of 3-designs to hypergraph decompositions is pre-sented.

可以证明3-一致完全超图K_v~(3)分解成超图K_4~(3)-e的充分必要条件是v≡0，1，2(mod 9)且v≥9。

Demographers must know both how to scientifically obtain information and how to interpret it relatively.

成为人口学家的必要条件就是懂得如何科学地获取这些信息以及做出相关表述。

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。