chemical gum合成胶粘剂chemicaladj.化学的n.药品；化学物chemical dehydrator化学脱水剂,化学干燥剂chemical antagonist化学性拮抗剂chemical similitude化学相拟法chemical experiment化学实验chemical inhibition化学抑制chemical fuel motor普通燃料火箭发动机chemical complexity化学复杂度chemical arithmetic化学算术chemical bronchitis化学性气管炎chemical industries化工企业