vacuity
书籍:英汉军事新词库
更新时间:2018-10-07 19:45:54
出处:按学科分类—军事 上海科学技术文献出版社《英汉军事新词库》第389页(393字)
【词性】:n.
【释义】:
空虚,空洞无物的东西
‖vacuum[′vkjum]n.真空v.用真空器清扫…vacuum air pump真空泵vacuum augmenter真空增强器vacuum booster真空助力器vacuum emergency valve真空紧急制动阀vacuum flight真空飞行vacuum fuel supply真空供油vacuum gauge真空计vacuum handling真空处理vacuum insulation真空绝热vacuum intensifier真空增强器vacuum regulator真空调节器vacuum state真空状态vacuum treatment真空处理vacuum truck真空油槽车vacuum tube真空管