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-symmetric resonator半对称谐振腔
half maximum reaction rate半最高反应速率
half-tone charge pattern半色调电荷图
half period dry management半期旱作
half amide of malonic acid丙二酸半酰胺
half life of decomposition分解半衰期
half-titanocene catalyst酚氧基单茂钛