Metakaolin
偏高岭土
🗣️ 情景例句
However, through my experience in business at home and abroad.
但从事国内外的商业的经历中。
A wise man changes his mind, a fool never will.
智者通权达变，愚者刚愎自用。
and by measuring the time interval between the taps and the receipt of the echoes, the depth of the sea at that point can be calculated.
测出回声间隔的时间，便可算出该处海洋的深度。