chemical fit化学配合chemicaladj.化学的n.药品；化学物chemical clarification化学澄清Chemical shock therapy化学性休克疗法chemical stabilization化学加固,化学稳定化chemical pre-plating化学预镀Chemical acidification化学酸沉chemical heat recovery化学热回收chemical specification化学规格chemical paddy husking稻谷化学脱壳Chemical drying system化工烘干Chemical constituti on化学结构