例如木材灰、可呼吸性二氧化矽和铍为最近被提出具较低阈值的例子。
Examples where lower limit values have recently been proposed include wood dust, respirable silica, and beryllium.
薄膜先以微影及蚀刻制程制作出金属线路,线路之间则填入二氧化矽。
The lithographic and etching process for a membrane creates a mesh of metal wires with silicon dioxide filling the space between them.
其他成分:明胶(胶囊),双磷酸钙,微晶纤维素,胶体二氧化矽和硬脂酸镁。
Other Ingredients: gelatin (capsule), dibasic calcium phosphate, microcrystalline cellulose, colloidal silicon dioxide, and magnesium stearate.
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