查询词典 necessary

The sculptural expressiveness of the green roof is necessary for the completion a sustainable biotope.

要想建造一个可持续性的生态单元，花园中雕塑表现就显得必不可少了。

In this paper, we study a necessary and sufficient condition that complete bipartite graph exists factors.

讨论了完全偶图存在 [1，2 ]因子的充分必要条件，并给出了 [1，2 ]因子的计数

A theoretical breakthrough is necessary to improve the bipartition methodology.

因此 ，必须对以交易费用分析为标准的市场与企业的简单两分法加以理论突破。

Applyingthe sufficient and necessary condition of biquadratic Bézier patch being non-negative,a method is presented to see whether two points are the closest points between twobiquadratic NURBS surfaces when the two points are respectively on the two surfaces. Based on the method, the surface split algorithm is improved while the surfaces arebiquadratic NURBS surfaces.

本文利用双二次 Bézier 曲面为非负的充要条件，提出了分别位于两张双二次 NURBS 曲面上的点是否为这两张曲面间距离最近的点的判别方法，并由此在双二次 NURBS 曲面的场合对计算最短距离的曲面分割法作了改进。

For light, the necessary phase shift can be introduced by use of a birefringent material. In Fig.

对于光波来说，位相转换可以采取晶体的双折射得到。

But if the female's birth canal grew too wide, her pelvis would be so wide that she would lose the ability to run: still a necessary skill in the dangerous world of 2 million years ago.

但是，如果女性的产道长得太宽，她的骨盆会宽得让她失去奔跑能力；在200万年前的危险世界里，奔跑仍然是一个必要的技能。

It is necessary to provide psychological consultatin for women who used to have birth defect child.

应特别关注该特殊群体，对其加强心理健康的指导和心理干预。

Considering the factors such as randomness of natural lightning locus and the coexistence of primary and secondary leaders, it is necessary to lead in the concept of dynamic lightning protection shielding angle. It is suggested that the angular bisector of practical protective angle formed by ground wire or earth pin in UHVAC transmission line and conductor should be aligned with the direction of lightning leader as well as the ratio of vertical span to horizontal span and the impact of wind speed should be considered.

考虑自然闪电轨迹的随机性和雷电主先导与次先导并存现象等因素，有必要引入动态防雷保护角概念，建议特高压交流线路中地线对导线的实际保护角形成的角平分线应与雷电先导的来向一致，并应计及垂直档距和水平档距的比值和风速的影响。

Since these questions cannot be satisfactorily explained by existing researches, it is necessary to study personality bisexuality from other angles of view.

对这些问题，已有研究似乎还不能很好的回答。

Because the bismuth product structure is simple, so developing the bismuthic deep process product is necessary.

但是铋产品结构比较单一，进一步发展铋的产品深加工很有必要。

As of Tuesday, Google's results were still censored in China.

截至周二，谷歌的搜索结果仍受中国审查。

In order to make the positive action increase and negative one decrease, the sub-forces of the social factors must be adjusted to form a centripetal force.

在这一过程中，人的主体性发挥是社会有机体健康发展的灵魂。