threeplyadj.三层的(三股的)n.三夹板
threenum.三n.三;三个adj.三个的
three solid hours整整三个小时
three-roll mill三辊式滚轧机
three level laser三能级激光器
three quarter bat砖
three-part tree三合树
three pitch error三节误差
three-beat gait三个蹄音的步法
three-way radio三用接收机
three-line whipn.英政党领袖给党员的紧急命令(指示本党议员按某)
three oal reserve三个煤量