chemicalsn.化学药品；化学制品名词chemical的复数形式chemicaladj.化学的n.药品；化学物chemical signal化学信号chemical gaging化学测流法chemical sensor化学传感剂chemical record化学记录chemical buffer化学缓冲剂Chemical-type化工型chemical dyeing化学染色chemical lesion化学性损害chemical mining化学采矿chemical hazard化学危害性