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【计】 扩展器, 延长器, 扩充部件
【化】 补充剂; 填料
【医】 膨胀器, 膨胀剂

oil extender extender lens plasticizer extender reagent extender zoom extender chain extender antenna extender extender oil wire life extender underwater mine extender mechanism pulse extender oil-extender sign extender extender pigment extender board memory extender bus extender input extender extender plasticizer