查询词典 necessary condition

To take the necessary training course and to learn the necessary technique.

参加必要的培训和学习必要的技能。

Your transcendence is necessary beloved, necessary to the ascension of Earth.

你的超越是必需的，至爱的人类，对地球的提升是必需的。

This paper, which focused on the structure optimization theory and method, has finished such studies as follows: The three dimension model has been built, which provide the necessary conditions for the building of the dynamics equivalent model. By the launch dynamics simulation, the loads of the key joints when the rocket is launched has been got, which provide the necessary data for the finite element analysis and the structure optimization. The finite element model of the excess weight parts of the rocket has been built, buy the finite element intension analysis of the model in two conditions, the displacement and the stress of the key points have been got, which make us know the distributing of the stress and the transmogrification of the part. To satisfy the intension and the precision design request and to decrease the weight of the part as many as possible, the part has been topology optimized by the structure optimization theory and method. After that, the new model has been analysis in structure and launch dynamics. The contrast of the character change of the old part and the new part and the influence on the rocket system have been studied.

本文以结构优化理论和方法为核心，主要做了以下工作：建立了某自行火箭炮全炮三维实体模型，为建立该火箭炮系统的动力学等效模型提供了必要条件，进行了发射动力学仿真，得到该火箭炮发射装置各关键连接部位在发射状态下的载荷，为有限元分析和结构优化提供了必需的数据；建立了该火箭炮发射装置超重部分的有限元模型，分两种工况，对模型进行了有限元强度分析，得出了关键部位的位移和应力值，对其的应力和变形分布有了具体的了解；运用结构优化的理论和方法，对该火箭炮发射装置超重部分进行了拓扑优化，使其在满足强度和精度的要求下尽可能多地减轻重量，对优化后得到的模型进行了结构分析和发射动力学分析，对比了该部件优化前后的特性变化以及对火箭炮系统的影响。

" The loss which America has sustained since the peace, from the pestilent effects of paper money on the necessary confidence between man and man, on the necessary confidence in the public councils, on the industry and morals of the people, and on the character of republican government, constitutes an enormous debt against the States chargeable with this unadvised measure, which must long remain unsatisfied; or rather an accumulation of guilt, which can be expiated no otherwise than by a voluntary sacrifice on the altar of justice, of the power which has been the instrument of it."

根据商务印书馆1980年的《汉译世界名著系列》，译文为"自从和平时期以来，美国由于纸币对人与人之间的必要信任、对公众会议的必要信任、对人们的勤勉和道德，以及对共和政府的性质等等方面所造成的有害影响而遭受的损失，对各州造成了应由此项轻率措施负责的极大的过失；它一定会长时期令人不满，或者不如说是一种罪孽的积累，要不是在正义祭坛上自愿牺牲用以达到此项目的的权力，就无法赎罪"。

Keep Necessary Receipts Receipts which come from the purchase of necessary items for the individual with xeroderma pigmentosum should be saved for tax reasons.

保持必要的收益，收益则来自购买必要的物品，让个人与着色性干皮病，应节省税收原因。

We affirmed clearly and definitely that the universal moral law which represented by the three absolute orders is the necessary and sufficient conditions of legitimacy and the necessary prerequisites of reasonability of the leagal right, and then found the binding point among the freedom philosophy and economic analysation

明确肯定以合理理解的三大绝对律令为代表的普遍道德法则是法律权利正当性的充要条件及其合理性的必要条件，初步找到了法律的&自由哲学&与法律的经济分析之间的结合点，为法治国家的立法、执法及司法活动提供一种可能的纲要性指导。

The Contract No., measurement, gross weight, net weight of each package, the heat number, port of destination and any necessary cautions such as "Do not Stack Upside Down","Keep Away From Moisture","Handle With Care","Hook-on Point" shall be stenciled on the surface of each package with fadeless pigment, whenever necessary.

1每件包装货物的合同编号、尺寸、毛重、净重、炉号、目的口岸以及任何必要的注意事项，例如：&不要倒置&、&防潮&、&小心轻放&、&起吊点&等，在有必要时应以不褪色的颜料印刷在每件包装物的表面。

The measurement, gross weight, net weight of each package, port of destination and any necessary cautions such as "Do not Stack Upside Down","Keep Away From Moisture","Handle With Care","Hook-on Point" shall be stenciled on the surface of each package with fadeless pigment, whenever necessary.

装运标志 Shipping Mark（散装货物只需载明唛头，而不需要装卸储运标志或危险品标志）8.1每件包装货物的尺寸、毛重、净重、目的口岸以及任何必要的注意事项，例如：&不要倒置&、&防潮&、&小心轻放&、&起吊点&等，在有必要时应以不褪色的颜料印刷在每件包装物的表面。

That is, it is absolutely necessary when you drive a car, to think, or it may be instinctual, but you have thought of it, to learn a language, to play the piano, to do your business, to do whatever you do, thought is necessary.

那就是，当你驾驶一辆车的时候它是绝对必须的，去想，或者它或许是本能的，但是你已经考虑过它了，去学一门语言，去弹钢琴，去做你的生意，去做无论你做的什么，思想是必须的。

That is, it is absolutely necessary when you drive a car, to think, or it may be instinctual, but you have thought of it, to learn a language, to play the piano, to do your business, to do whatever you do, thought is necessary.

那就是，当你驾驶一辆车的时候它是绝对必需的，去想，或者它或许是本能的，但是你已经考虑过它了，去学一门语言，去弹钢琴，去做你的生意，去做无论你做的什么，思想是必需的。

In the days of sailing vessels the crew were afraid they would be becalmed on the ocean.

在使用帆船的时代，船员们担心他们会因为无风而无法在海洋上航行。

As long as foreign donors pay the PA's salary bill, few expect a new intifada.

只要外国继续为巴权力机构的薪水买单，希望发动新暴动的人便寥寥无几。