ground-and-washed chalk 中文意思是什麼
ground-and-washed chalk
解釋
重質碳酸鈣-
A pure white grade of chalk that has been ground and washed for use in paints, ink, and putty
白堊粉,白粉一種碾碎的並洗過的純凈白堊,用於油漆、墨水和油灰
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