Halfdann.哈夫丹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-cooling temperature半冷却温度half-transmitting mirror半透射镜half duplex communications半二重通讯half-reduction potential半还原势half-saturation constant半饱和常数half-firewood blowing on半木柴开炉half-court lateral press半场横列阵式紧逼防守half-track tape recorder双声道磁带录声机Half shell pressure vessel瓦片式压力容器half-opened corner joint半开角焊接