“pearl hardening”的概念、定义、翻译、参考文献-科学参考

单词	pearl hardening
释义	pearl hardening [`pǝrl ¦härd·ǝn·iŋ] ^{INORGANIC CHEMISTRY} Commerical name for a crystallized grade of calcium sulfate; used as a paper filler.
随便看	closed architecture closed association closed-belt conveyor closed-caption television closed-cell foam closed circuit closed-circuit communications system closed-circuit grinder closed-circuit pulverizing closed-circuit signaling closed-circuit telegraph system closed-circuit television closed-coil armature closed covering closed curve closed cycle closed-cycle fuel cell closed-cycle reactor closed-cycle turbine closed die closed drainage closed ecological system closed file closed fireroom system closed fold

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