道学气 发表于 2025-3-25 03:22:21
Metal Formingcal properties such as mechanical, electrical, acoustical, etc. of workpieces and hence increase their capabilities in service. Besides the hardness, ductility, residual stresses also the ductile damage level of the formed components can be controlled during forming. Formed metallic components haveelucidate 发表于 2025-3-25 10:46:13
Machining Processesworkpiece) either in the form of small pieces (e. g., chips) or by chipless processes based on e. g., evaporation. To achieve this kind of material removal different tools are mandatory, thus generating surfaces by relative motions between the workpiece and tool provided by the respective machine toaudiologist 发表于 2025-3-25 13:34:27
Precision Machinery Using MEMS Technologys and experimental evaluations are also shown. Two types of electrostatic-driven optical MEMS devices: An interferometric display device and an evanescent coupling switching device are shown, in which no liquid crystal or organic electroluminescence materials are required except for a silicon dioxid整理 发表于 2025-3-25 17:11:55
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s in the world. The major food crops of the world are found in the grass family. From time immemorial, grasses have provided food and shelter for humanity, domesticated livestock, and wildlife; without grasses, these forms of life might cease to exist. The grass family is large in size, diverse in h