例句 /

Alumina is then extracted from the furnace and passed over vibrating sieves to obtain an extremely fine powder with a diameter of less than one micron.

Alumina is then extracted from the furnace and passed over vibrating sieves to obtain an extremely fine powder with a diameter of less than one micron.

将铝氧粉从煅烧炉中提取出来。通过振动筛,筛出直径不足1微米的超细粉末。