threewayadj.三路的
threenum.三n.三;三个adj.三个的
three aspect signal三位显示信号
three-pass boiler三回程锅炉
three days of talks三天的会谈
three pole sounding三极测深
three point contact三点接触
three-piece suite三件套家具; 一套三件的家具
three major demands三大需求
three R's principle
three defense lines三道防线
three-drum system三鼓法