Halform三卤甲烷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-round iron wire半圆铁线half selection current半选电流half-closed interval半闭区间, 半开区间half Fourier transform半傅立叶变换half-angle of spread半扩散角half-loading section半负载段half-baked knowledge一知半解half-bridge inverter半桥逆变half bleached sheeting半漂细布half-shade polarizer半影起偏振镜