自动力

Ni-Cr/BN composite was produced in the active sintering process using nickel carbonyl,Cr2O3 and C powders as original materials,and hexagonal BN powder as solid lubricant.

在现代机械制造工程中，为发展热动力机械等先进设备，需要研制出能够在高温下使用的自润滑复合材料[1]。

Via his study the author drew the following conclusions: their formation is a process of discrete sports population going from a disorderly self organization to an orderly self organization; their development needs to be synergized with such system elements as sports legislations and policies, playgrounds and facilities, as well as sports guidance; traditional community sports and community sports localization are the driving mechanism for spontaneous mass sports organization.

研究得出：其形成是离散状态的体育人口从无序向有序的自组织过程，其发展需要体育法规政策、场地设施、体育指导等系统要素的协同，社区传统性体育和社区体育本土化是社区自发性群众体育组织的动力机制。

For vibration mode-shape, this affect is moreseverity on high rank stage vibration than low. With opened hollow and pier added on dam,the frequency of vibration decline.

对于振型而言，这种影响对低阶振型比高阶振型大，考虑孔口和闸墩后，大坝的自振频率有所降低；在低阶振型中有一部分的排列顺序发生了变化，但这些变化不致使大坝的动力特性发生显著的改变。

The formula calculating the first frequence of the bridge with the pile foundation is derived by using the Rayleigh Principle.

用Rayleigh法推导了桩基桥梁的第一自振频率的近似计算公式；在动力学效的原则下建立了桩—上—上部结构体系的等代简化模型，导出了动力等效嵌固深度l〓的计算公式，并与静力等效嵌固长度Z〓的计算公式进行对比分析，给出了静力公式的误差范围。

The paper gives a overall of the current situation of the development of drill pipe power tongs in well at home and abroad at first, given the manufacture techonology.

本文运用的基于自顶向下设计思想进行参数化设计的方法，现已完成了&钻杆动力钳系列产品开发&的项目。

Sgt Sean Brennan told the court that police wanted to drop the charge after receiving proof Smith could safely drive an automatic car with power steering.

西恩。布勒南警官出庭时说，警方接获了史密斯可以安全驾驶备有动力方向盘的自排车之证据后，希望能撤销对史密斯的起诉。

Varying speed institution used speed reducer and rag wheel. So the power was divided into two parts, one part was transferred to working parts loosing soil, the other was delivered to driving system making the machine go forward.

传动变速机构采用了减速器、链轮分级传动，电动机的动力分别传递给工作部件和行走机构，实现松土机耕作土壤和自走的目的。

This article main analysis dragline pre-stressed belt rib monolayerspherical surface network shell natural characteristic, takes theresearch key by the most commonly used K6 net shell mechanicalanalysis.

本文主要分析拉索预应力带肋单层球面网壳自振特性，以最常用的K6型网壳的动力分析作为研究重点。

Self-focusing of an intense short laser beam propagating in cold, underdense plasma has been studied.

采用更完整的有质动力形式来研究强的短脉冲激光在次临界密度冷等离子体中传播时的自聚焦现象。

According to self-estimate, appropriately lengthening the time of education for 15- 19 year-olds to halve the 6.37% proportion of employment to the national total, we shall be able to cut the nationwide jobs by 23 million, of which 5 million were jobs in cities and towns. This would not only alleviate the pressure of employment, but also raise the cultural quality of the youngsters and rear high-quality human resources, providing motive force and fountains for the sustainable development strategy of our country.

据测自，适当延长15-19岁青少年受教育时间，使其就业人数占全国总就业人口比重由目前的6.37%下降一倍，那么全国劳动就业供给量可望减少2300万人，其中城镇可减少500万人，这样不仅可缓解就业压力，还可大大提高青少年的文化素质，形成高质量的人力资本，为我国的可持续发展战略提供动力和源泉。

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。