Magnesium fluoride is widely used in the preparation of hot-pressing crystal, vacuum coating material and optical glass.
氟化镁广泛用于热压晶体、真空镀膜和光学玻璃的制备。
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The microstructure, properties and cracks of the fractured cold pressing die made of 45 steel were analyzed by optical microscope, scan electronic microscope and micro-hardness instrument.