短语词组短语Biphenyl Zone Refined 联苯zone refined germanium 区域精炼的锗zone refined metal 区域精炼金属zone -refined germanium 区域精炼的锗4 -tert-Butylphenol Zone Refined 叔丁基苯酚Zone -refined germanium ingot 区熔锗锭 返回 refined zone