diatomite

柯林斯詞典

diatomite /da???t??ma?t/

• 1. N a soft very fine-grained whitish rock consisting of the siliceous remains of diatoms deposited in the ocean or in ponds or lakes. It is used as an absorbent, filtering medium, insulator, filler, etc 硅藻土→see also diatomaceous earth

返回 diatomite