英语词汇upmass怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

单词	upmass
释义	upmass 简明释义 n.上行质量：指运载火箭将有效载荷（如卫星、航天器等）送入轨道所需的质量。词源 1 upmass: up +? mass FROM: wiktionary
随便看	science consultant science council of japan science course science court science curriculum scienced science department ScienceDirect science economics science education science education Science Education Center science education history Science,Environmental Science,Environmental Health science equipment science experiment science facilities science fact science faction science fair science fair science fair Science fantasy sciencefiction

英汉双解词典包含3185865条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。