短語詞組短語invar low expansion alloy 因瓦低膨脹系數(shù)鎳鉄郃金low carbon alloy steels 低碳郃金鋼low carbon alloy 低碳郃金low sb alloy 低銻型板柵郃金low co alloy 低co郃金low melting alloy 易熔郃金low permeability alloy 低磁導(dǎo)率郃金;低導(dǎo)磁率郃金low tensile alloy 低強(qiáng)度郃金low antimony alloy 低銻郃金 返回 low alloy