n.硅石；矽土

Our company has our own silia stone moutain and silica powder producing plant. 我公司有自己的硅石礦山和硅石粉加工廠。

The government sets up new health standard for respirable silica dust in the air of workplace. 政府出臺了新的工作場所空氣呼吸性矽塵衛(wèi)生標(biāo)準(zhǔn)。

n.長方形會(huì)堂；長方形教堂

n.硅酸鹽

硅酸鹽

n.鋁硅酸鹽(硅酸鋁)

n.硼硅酸鹽

n.頁硅酸鹽