不能妥协 发表于 2025-3-25 05:04:36
Mingguo Zhai,Xiyan ZhuDM, in addition to erosion of workpiece material, some amount of tool removal also occurs. Other than machining, EDM is also used for surface coating purposes. The electrode material is coated on the work surface during the electric discharge coating (EDC) process. In powder mixed EDM (PMEDM), someear-canal 发表于 2025-3-25 10:22:16
e of specimen geometry and strain amplitude in promoting inhomogeneous cyclic deformation. The specimens were cylindrical with an effective gauge section 10 mm in diameter and 20 mm long. The radius of the specimen shoulder was systematically varied between 20 mm and 60 mm. The fatigue tests were rucuticle 发表于 2025-3-25 11:42:56
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http://reply.papertrans.cn/63/6215/621490/621490_25.pngCHASE 发表于 2025-3-26 01:35:43
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mely its absence, may require some justification. Perhaps the most satisfactory explanation is to call attention to the overlapping heterogeneity of the lipoprotein classes and to emphasize the interdependence of all the human lipoproteins. The intensive study of patients with abetalipoproteinemia (多骨 发表于 2025-3-26 12:52:16
Mingchun Yang,Bin Chen,Cong Yanpt that LDL particles are primarily formed from VLDL could be developed only after a better understanding of the nature of the protein moiety of lipoproteins (the apolipoproteins) was achieved.. Nevertheless, it had been suggested by several earlier investigators that some constituents of LDL are de发电机 发表于 2025-3-26 19:26:20
Fu-Lai Liu,Ping-Hua Liu,Jia Caias aroused much interest in diffusion of metals in polymers. Various investigations, involving surface spectroscopy, electron microscopy, ion scattering, direct radiotracer measurements, and Monte Carlo simulations have contributed considerably to our understanding of the diffusion behavior. Metal d