The frustules of dead diatoms are highly resistant to decay, and form deep sediments on the floors of oceans and lakes called diatomaceous earth or kieselgubr, which is used in insulating materials, fireproof cements, filters, and in the manufacture of explosives.

死亡的硅藻細(xì)胞壁不容易腐爛，在海洋或湖低沉積形成硅藻土欧美日韩图自拍图片在线观看，可用作絕緣国产午夜天堂免费观看AV，耐火，填充日韩性色自拍视频网站在线播放，磨光等材料超碰97自慰，又可以供過(guò)濾液體使用。