pus840 发表于 2025-3-25 04:51:17
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Christian Brecher,Manfred Wecknear, isentropic oscillations of isolated gaseous stars, and thus of compressible spherically symmetric equilibrium configurations, has largely been developed from the viewpoint of the hypothesis of the physical radial pulsations of stars. Written for doctoral students and researchers, this monograplipids 发表于 2025-3-25 12:10:12
Christian Brecher,Manfred Weckic stars Intermediate steps in the mathematical derivations The study of stellar oscillations is the preeminent way to investigate the stability of stars and to interpret their variability. The theory of the linear, isentropic oscillations of isolated gaseous stars, and thus of compressible spherica音乐学者 发表于 2025-3-25 17:10:47
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Introduction,y, in particular the scope of functionality and performance of machine tools. It thus became possible to create flexible, programmable control technology that could perform complex switching and control operations using software systems tailored specifically for the purpose.incarcerate 发表于 2025-3-26 01:51:54
Feed Axes in Machine Tools,ment instructions in conjunction with tools. On purely mechanical and electrical/hydromechanical automatic production machines, information on the travel and speed required for machining a workpiece is available in the form of mechanical storage, or in cam plates or templates (refer to Chap. 8). Num敌手 发表于 2025-3-26 07:20:34
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Design of Feed Drives,rate the required kinematic momentum directly by means of torque or linear motors (see Sect. 2.1). For indirect drive concepts, mechanical transmission elements (such as a ball screw spindle) are used to convert rotation to translation.Original 发表于 2025-3-26 15:27:02
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