查询词典 necessary

Such belt-tightening had proved necessary even in the months before the rescue.

这样的收紧裤腰带过日子即便在救助后的几个月也被证明是必须的。

So it is necessary to study on how to calculate bending moment utilizing the result of FEM.

这类结构在有限元计算中也易出现位移计算值偏小的剪切闭锁现象。

So it is necessary to study the new tube bending method.

因此有必要研究新的管材弯曲成形方法。

As the increase using of lithium-ion battery, it is necessary and benefice to consider the recycling of the cells.

目前主要是应用湿法冶金技术回收电极材料中的有价金属，如锂、钴、镍等，另外随着锂离子电池的发展以及对之研究的深入，也开始对失效的电极材料进行修复的探索。

If any cleric without clear and necessary cause presumes to frequent convents of nuns, let the bishop keep him away; and if he does not stop, let him be ineligible for an ecclesiastical benefice.

如果任何一名没有明确的和必要的事业擅自频繁修道院的修女，让主教让他走，如果他不停止，让他无资格的教会采邑。

In order to raise the competitive capacity, it is necessary for enterprises to establish management information system of plant, so that whole plants system can be in a benignant cycle of sensitive information, scientific management and precise decision.

通过建立设备管理信息系统，使整个企业设备系统处于一个信息灵敏、管理科学、决策准确的良性循环中，提高设备综合管理水平，最终达到提高企业的市场竞争力。

To satisfy the demands of markets for berberine, it is necessary to explore the other berberine resource .

该属植物主要分布在我国西南地区，四川省是该属植物的集中分布区之一。

The basic outline of the stream should have been established with excavated soil from the pond, but some digging of different catch pools may be necessary and you may need to build up more of a berm at the waterfall.

基本的轮廓流应该已经建立了与挖掘的土壤，从池塘的，但有些挖不同赶上泳池可能是必要的，你可能需要建立更多的是护堤瀑布。

The basic idea is as follows: first, a kind of plane α-B-spline interpolation curve with a shape control parameter a is constructed; then, by converting the first derivatives of the curve into Bernstein polynomial, the positive conditions of Bernstein polynomial can be used to get the necessary and sufficie nt conditions for the monotonicity of α-B-spline interpolation curves, i.e., the range of the parameter a. Therefore, monotone-preserving interpolating curves can be obtained succinctly.

其基本思想是：首先构造带有形状可调参数的一类平面(-B样条插值曲线，再把其一阶导矢的两个分量分别转化为Bernstein多项式，从而利用Bernstein多项式的正性条件，得到此曲线为单调的充要条件，即形状参数的取值范围，简单、快捷地实现此参数样条曲线的保单调插值。

In this paper,the author obtains some features of Bertrand curves such as that necessary and sufficient conditions for a Bertrand curve is curve,discusses the distance from a point of a Bertrand curve to the corresponding point of the mate of Γ,the angle of the two tangent lines and so on.

讨论了Bertrand曲线的特征，得出了诸如曲线是Bertrand曲线的充要条件，Bertrand曲线Γ上的点与其偶线上对应点的距离，以及两点切线交角等结论。

They weren't aggressive, but I yelled and threw a rock in their direction to get them off the trail and away from me, just in case.

他们没有侵略性，但我大喊，并在他们的方向扔石头让他们过的线索，远离我，以防万一。

In slot 2 in your bag put wrapping paper, quantity does not matter in this case.

在你的书包里槽2把包装纸、数量无关紧要。