halfnutn.对开螺母
halfn.一半;下半场;半学年adj.一半的;不完全的adv.一半地;不完全地
half-field angle半视场角
half-convergency转换角
Half-closed Loop半闭环
half time interval半场休息
half tone plotting半色调绘图
half word boundary半字界
half-tone signal半音度信号
half-round drill半圆钻
half - wave hole半波孔
half-ordered set半序集