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