Silicon metal is widely used in refractory material, powder metallurgy industry, it is a good antioxidant. To join in the refractory metal silicon can react with oxygen, first to form a new mine closed porosity, improve the density, prevent the penetratio
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The crystal oscillator refers to a slice (abbreviated as a wafer) from a quartz crystal at a certain azimuth angle, a quartz crystal resonator, which is simply referred to as a quartz crystal or a crystal, and a crystal oscillator; and a crystal element i
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