headbox压头箱headn.头部；头脑；顶端；领袖；硬币的正面v.前进；为首；朝向adj.首要的；前面的head of the neighbourhood committee居民委员会主任head solid-phase micro extraction顶空固相微萃取Headstream of sadness and happiness苦乐源Head Junior Officer Training Branch初级民防官培训科科长Head Financial Investigation Branch金融调查组主任Head driven phrase structure grammar中心词驱动短语结构语法headspace-single drop condensation顶空-单液滴冷凝Headspace gas chromatographic method顶空气相色谱法Head Instructional Technology Branch资讯科技科科长head-chest leads electrocardiogram头胸导联心电图