It's a necessary condition for many worthwhile things: child care, friendships, etc.
对于许多有价值的事情而言，如儿童看护和友谊等，它是必要的条件。
A necessary condition for simple iteration convergence in structural reanalysis is proposed.
还给出了在结构重分析中简单迭代法收敛的一个必要条件。
LISP is a functional programming language, but that is not a necessary condition for a dynamic language.
LISP是函数式程序设计语言，但这不是动态语言的必要条件。
Time is thus a necessary condition to achieve the previously stated objectives of arbitrage and cooperation.
由此，时间是一个实现之前所提到的利益寻租和合作目标的必要条件。
A creation of philosophy with global meanings is a necessary condition for China to become a world power.
创造有世界意义的哲学是中国作为世界大国的必要条件。
A necessary condition to obtain nutrition for maintaining the life activities of the human body is food intake.
饮食是摄取营养，维持机体生命活动的必要条件。
We have a duty to perform in each of those contexts and to be responsible is a necessary condition of our existence.
在每一情形中，我们都有一种义务要履行。因此，成为一个有责任心的人是我们人生的一种必要条件。
Efficiency is achieved and high efficiency filter is a necessary condition, one of which is the most easy to implement.
高效过滤器的效率达到要求只是个必要条件之一，也是最容易实现的条件。
The standardization of state audit report is a necessary condition for the improvement of the quality of our state audit report.
要进一步提高我国国家审计报告的质量，就必须加强审计报告的规范化建设。
Sports and exercise can improve the health of human body and man of optimism, but the optimism is a necessary condition of longevity.
体育和运动可以增进人体的健康和人的乐观情绪，而乐观情绪却是长寿的一项必要条件。
As the clothes against the cold, with one of the health is also a necessary condition of human existence, while it is often overlooked.
正如衣物御寒一样，拥有健康也是人类生存的必要条件之一，而它却往往被忽视。
The need for beauty is the highest demand of human mentality as well as a necessary condition for the formation of perfect personality.
对美的需要是人类心理最高的需要，也是完美人格形成的必要条件之一。
Being able to trace who said what is a necessary condition for building a system of trust, but this is not generally sufficient by itself.
能够跟踪谁说了什么是构建可信系统的必要条件，但只有这一条件，通常还不够。
Assimilation of the crustal materials by the mafic magma from the crust is a necessary condition of obtaining s and forming sulfide ores.
镁铁质岩浆同化地壳是获取硫得以产出硫化物矿石的必要条件。
How to acquire the competitive advantage in this protean global market place? Timely reaction is of course a necessary condition for survival.
如何在瞬息万变的全球化市场环境下取得竞争优势，快速反应是生存的必要条件。
However, the Working Group argues the data centres location is neither a sufficient nor a necessary condition to mitigate infrastructure risks.
但是，工作组怀疑设立数据中心对减轻基建风险既不是有效也不必要的条件。
So some type of security and guarantees for Morgan Tsvangirai's safety certainly should be a necessary condition for holding a runoff, " she said.
所以，对茨万吉拉伊采取某种保安措施和安全保障当然应该是举行决选的必要条件。
But in this paper, this assumption is no longer a necessary condition, that is, we can control the T-S fuzzy systems with fast time-varying delays.
但是在本文不再需要这个假设，也就是说本文所采用的方法能处理快变时滞问题。
A necessary condition of Devaney's chaos for cellular automata (CA) is found, then an algorithm is presented to verify which CA satisfy this condition.
提出了元胞自动机混沌的一个必要条件，给出了判断初等元胞自动机是否满足这一条件的算法。
However, it is not hard to show that every one of these attributes is at best a necessary condition but not a sufficient condition for a thing to be art.
然而，不难表明，这些属性中的每一种，对于一个东西成为艺术而言，充其量是一个必要条件，而非一个充分条件。
In a business setting - as in all other social relationships outside the workplace - trust is a necessary condition for effective cooperation within a group.
在商业领域，就像在工作场合的其他社会关系一样，信任对企业间有效合作的必要因素。
The relation between the interception factor and signal parameters is deduced. Large time bandwidth (TB) product is a necessary condition for an LPI signal.
导出了信号截获因子与信号参数的关系，认为大的时间带宽积是低截获概率信号的必要条件。
Good presenters know that the content (data, evidence, logic) is a necessary condition but not a sufficient condition for a truly world class presentation job.
优秀的讲演者知道，内容(数据、证据、逻辑)只是真正的世界级讲演的必要条件，而非充分条件。
Well, it's good to know that the senator is capable of revising his theories after he acquires new information, a necessary condition for a truly scientific worldview.
好吧，我们的参议员能够在获得新信息之后修改其理论是件好事，毕竟这是拥有科学世界观的必备条件之一嘛。
Stable feed flow is the basic factor of ensuring heat and material balance of rotary kiln and it becomes a necessary condition of optimizing calcination technique.
回转窑给料量恒定是保证回转窑热工平衡和物料平衡的基础。
Stable feed flow is the basic factor of ensuring heat and material balance of rotary kiln and it becomes a necessary condition of optimizing calcination technique.
回转窑给料量恒定是保证回转窑热工平衡和物料平衡的基础。
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