In the absence of any net external forces - on a system as a whole — - as we discussed last time — the center of mass will always have the same velocity.
在没有外力，作用于整个系统时-，我们上次讨论过-，重心总是，有相同稳定的速度。
If such economies become substantial net debtors in foreign currency, they become vulnerable to mass bankruptcy or public sector insolvency if their currency tumbles.
如果这些经济成为主要的净外币债务国，当它们货币的汇率大幅下降时，将会造成大量倒闭或公共部门无力偿还债务的情况。
By the continuous-feeding external-heating rotary kiln, the experimental studies on the gas yield characteristics, mass balance and net energy income of the polyethylene pyrolysis were performed.
在连续给料外热式回转窑试验台上，以聚乙烯为试验物料进行了热解产气特性、质量平衡以及能量净收益的试验研究。
In addition, the new forms of the mass work under the new situation must be studied and the new net of public defense and public order in our society should be established and perfected.
积极探索新形势下群众工作的新形式，建立完善新型的群防群治组织网络；
The final digital sample car includes the information of volume, mass, center of gravity and logical connection of electrical cabling net.
最终形成的数字化样机包含有车辆管道电缆在内的所有空间占位信息、质量属性和电气线缆网络的连接逻辑信息。
This paper supplies the method of calculating mass flow through the use of neural net work and succeeds in solving the uncertainty of parameter equations in calculation.
给出了基于神经网络的质量流量计算的方法，较好地解决了计算中参数方程的不确定性。
In order to resolve the problems of mass noise caused by up links in HFC net, it is the key that equipments should be operated in a high CNR value and that no distortion produced.
解决HFC网上行链路汇聚噪声问题的关键是使设备都工作在较高的CNR值而又不产生失真。
Pre-stressed cable net is used to control the dangerous rock mass in this project, and the concept, design and construction methods of it are creatively presented.
提出了预应力钢索网的概念，并对其设计与施工方法进行了阐述。
The results showed there exists certain effect of net structure of corrugated wire gauze Packings on its mass transfer performance.
研究结果表明，网纹构型对丝网波纹填料的传质性能有一定的影响。
Because of its superiority in time and space, net-based mass customize requirement information collect method can challenge and take place the traditional customer requirement collecting methods.
基于网络的需求信息获取方法以其在时间、空间上的优势，完全可以取代传统需求信息获取方法。
The sea surface wind stress and net heat flux affect the seasonal variation of water mass character in the PN section by changing the mixed layer depth every season.
海面风场和净热通量场通过改变混合层的深度影响障碍层深度的季节变化，而海面降水对于季节平均的障碍层分布和变化都没有显著的影响。
Then, a net-work simulating program is developed, which can be used to form reasonable rock mass structure model.
然后在此基础上，开发了一套相对完善的结构面网络模拟程序，为建立合理的岩体结构模型奠定了基础。
Then, a net-work simulating program is developed, which can be used to form reasonable rock mass structure model.
然后在此基础上，开发了一套相对完善的结构面网络模拟程序，为建立合理的岩体结构模型奠定了基础。
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