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【交流】【探討】誰能給解釋下dynamics和kinetics的區(qū)別�。�
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動力學這詞我見過兩個 dynamical ------ kinetic 有什么區(qū)別�。繘]有？ [ Last edited by GrasaVampiro on 2009-4-1 at 09:02 ] |
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dawnlight(金幣+3,VIP+0):3x,感謝分享~ 4-1 16:06
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dynamics分析過程的時間演化,[運]動力學 kinetics動[態(tài)]力學,分析運動與引起運動的力的關系， 20世紀一來，前者基本取代了后者 In physics and engineering, kinetics is a term for the branch of classical mechanics that is concerned with the relationship between the motion of bodies and its causes, namely forces and mass.[1][2][3] Since the mid-20th century, the term "dynamics" (or "analytical dynamics"  has largely superseded "kinetics" in physics text books[4]; the term "kinetics" is still used in engineering. For example, according to Rao et al.:[5]The relation between the external forces and their kinematic variables is popularly known as kinetics. … We examine the external mechanical agencies that cause the motion.…The motion of a rigid body consists of rigid translations as well as rotations. Each of these kinematic variables will now have to be related to their respective kinetic variables. The kinetic quantities associated with translations are forces and the kinetic quantities associated with rotations are moments or torques. – Rao, Lakshminarasimhan, Sethuraman & Sivakumar , Engineering Mechanics: Statics and Dynamics (2003), p. 175 The term kinetics is also used in a sense akin to chemical kinetics, particularly in chemical physics and physical chemistry.[6][7][8][9][10] In such uses, a qualifier is often used or implied, for example: "physical kinetics", "crystal growth kinetics", and so on. 以上根據(jù)wiki kinetics的counterpart是statics，靜[止]力學，分析靜止物體的受力 |
4樓2009-04-01 16:01:28
5樓2009-04-01 20:22:01
6樓2009-04-02 08:25:38
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