The velocity of the center of mass has not changed as seen from your frame of reference, because the velocity of center of mass is always the same, remember, because momentum is conserved.
质量重心的速度，并没有发生改变，你在参照系中可以看出，因为质量重心的速度，总是保持不变，要记住，由于动量守恒。
The name is a reference to International Prototype kilogram, as a base unit of mass in the International System of Units.
它的名字和国际单位中表示基本聚合物质质量千克有关。
Whether you stay in your reference frame or in the reference frame of the center of mass, it's immediately obvious that all the kinetic energy is lost.
无论你在对照系中，还是在质量重心体系，很显然，所有的动能都被损耗了。
SPRINGFIELD, MASS., December 20, 2010 –Merriam-Webster Inc., America's leading language reference publisher, has announced the Top Ten Words of the Year for 2010.
【马萨诸塞州斯普林菲尔德2010年12月20日讯】出版大名鼎鼎的《韦氏词典》的美国梅里厄姆——韦伯斯特公司（Merriam-WebsterInc.）于2010年12月20日公布了2010年度十大词语。
Thus it may be for reference in prediction of added-mass of other profiles.
从而为预估其它剖面附加质量提供参考。
He draws aspiration and USES creative trick for a reference from the elite culture and then use it to promote the quality of mass culture and interest of people.
他从精英文化的先锋艺术中汲取创作灵感，借鉴创作手法，以此用来提升大众文化的品质和大众审美趣味，并在这个汲取和提升的过程中构筑起自己的个性文化和表达方式。
Parameter is extracted from a mass data and information through the investigation and the reference of many related documents.
通过调研和查阅相关资料获取了大量的数据和信息并采用统计学的方法对求出流程中所需的参数。
Geocenter motion is the relative displacement from the center of mass of Earth to the origin of the Terrestrial Reference Frame.
地球质心(简称地心)是指包括海洋大气等的整个地球的质量中心，地心运动是地球质量中心相对于地球参考框架原点的位移。
According to reference group influence Theory, this study tests the differences in reference group influence between publicly and privately consumed products and luxury brand and mass-market brand.
基于参照群体影响理论，本次研究目标是考察消费者在奢侈品牌和大众品牌购买决策中，参照群体影响程度的差异。
The combination could greatly save the costs and provide theoretical reference for mass rearing even commercial production of D. isaea.
该组合可以大大节约繁蜂成本，为豌豆潜蝇姬小蜂的大规模繁殖乃至商品化生产提供理论参考。
At this time, the media event becomes an important reference for us to research the television medium effect as "high holiday of mass media".
此时，媒介事件作为“大众传播的盛大节日”成为我们进行电视媒介效果研究的一个重要参照。
The heat transfer models established in the paper have important reference value to establishing the complex models that consider comprehensively heat transfer, mass transfer and flow.
文中建立的传热模型对于今后建立综合考虑了传热传质及流动的复杂模型具有重要的参考价值。
Using the rule of communication and the basic method of mass communication theory for reference is an effective approach to grasp and enhance the skill.
运用新闻传播规律，借鉴沟通学等学科的基本方法，是我们掌握和加强科技新闻传播沟通技巧的有效途径。
Effective reference is provided in the paper for accurately analyzing the problem of crack prevention under construction of mass reinforced concrete.
本文的研究结果为精确分析大体积钢筋混凝土施工期的温控防裂问题提供了有效参考。
The main aim of this paper is that make a comparison between geochemical mass concept, geochemical field concept, geochemical anomalous concept and their space relation for reference.
本文的主要目的是把地球化学块体概念、地球化学场概念及地球化学异常概念的异同性及空间关系进行比较，供读者加以参考。
Objective To find out the peak bone mass(PBM) in people of Bose and provide useful reference data for diagnosis and preventing osteoporosis(OP).
目的了解百色地区骨峰值（PBM）的基本情况，为骨质疏松（OP）的诊断及防治效果评估提供依据。
The fluid flow and mix are the basic of mass and heat transfer in reactors, and also a reference to the design for reactors.
流体流动与混合是反应器中传质、传热的基础，是反应器设计的依据。
The breaking condition of the landslide rock mass is of significant reference to the research on the starting point of a high-speed clastic flow.
滑坡岩体的破碎情况对研究高速滑坡碎屑流启动部位有参考意义。
The findings can provide some theoretical reference for engineering practice when analyzing the rock mass unloading problems.
研究成果可为工程实践的岩体卸荷问题提供一定的理论参考。
The last part evaluates Jameson "s mass culture theory and points out that it may serve as reference to our contemporary cultural undertakings."
第五部分评价詹明信的大众文化理论，并指出其对我国当前大众文化建设的参考意义。
This collaboration with a leading clinical reference laboratory is intended to help drive the industry-wide move toward increasingly using mass spectrometry to conduct hormone analysis.
与领先的临床基准实验室合作旨在推进全行业逐渐使用质谱仪器来进行激素分析。
These methods used to get quantitative rock mass block index are potential reference for the establishment of other criteria.
所利用的研究方法，对岩体结构其他指标的确定具有借鉴意义。
We compare 3 measurement methods: volume method, He-reference method and tangent-mass method and analyze the experimental data.
比较了压力差体积法，氦气基准质量法以及切线质量法三种常用氢气吸附测量方法，并进行了数据对比分析。
The direct quantity of tumor DNA can not only reflect the change of tumor DNA, but also show the distribution of tumor cell mass DNA and provide much reference for early diagnose and the ch…
对肿瘤DNA直接定量不仅可以了解肿瘤DNA的改变，而且可用DNA直方图来显示肿瘤细胞群DNA的分布状况，并对肿瘤的早期诊断、治疗方案的选择具有较大的参考价值。
The proposed model can be used for valuable reference to study the nonlinear features of rock mass.
该模型对进一步研究岩体的非线性特征具有重要的应用价值。
Group of China Obesity Task Force. Body mass index reference norm for screening overweight and obesity in Chinese children and adolescents[J]. Chinese Journal of Epidemiology, 2004,25(2):97-102.
（in Chinese）中国肥胖问题工作组。中国学龄儿童青少年超重、肥胖筛查体重指数值分类标准[J]。中华流行病学杂志，2004，25（2）：97-102。
Group of China Obesity Task Force. Body mass index reference norm for screening overweight and obesity in Chinese children and adolescents[J]. Chinese Journal of Epidemiology, 2004,25(2):97-102.
（in Chinese）中国肥胖问题工作组。中国学龄儿童青少年超重、肥胖筛查体重指数值分类标准[J]。中华流行病学杂志，2004，25（2）：97-102。
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