... cover-glass gauge 盖玻片测厚计 cover-glass thickness 盖玻片厚度 coverage (1)作用范圈，有效距离(2)视野 ...
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Centrifugal glass cotton absorption characteristics not only and thickness and density of related, also and cover face materials, structural factors.
离心玻璃棉的吸声特性不但与厚度和容重有关，也与罩面材料、结构构造等因素有关。
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