英语词汇“PPT”的读音、翻译、释义、用法及例句-语文网

词汇	PPT
释义	PPT 兆分之一 parts per trillion的简称，为表示微量物质浓度的单位。
随便看	undercroft undercurrent undercut undercut under deck and/or on deck under deck cargo under-deck tonnage underdevelop underdeveloped underdeveloped countries underdevelopment under dispute underdo underdog underdone underdose underdrain underdrawers underdress underdressed underemphasize underemployed underemployment underestimate underestimation

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