英语词汇“pearl hardening”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	pearl hardening
释义	Definition of pearl hardening in English: pearl hardening noun A preparation of gypsum used to improve the quality of paper. Origin Late 19th century. Definition of pearl hardening in US English: pearl hardening noun A preparation of gypsum used to improve the quality of paper. Origin Late 19th century.
随便看	approving approvingly approving of approvings approx. approx approximant approximate approximated approximately approximately approximates approximate to approximating approximation approximation approximations approximative approximatively approximativeness approximator apps appt appul-mos appurtenance

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Definition of pearl hardening in English: