标准查询 标准查询航空航天系列. 规定抗拉强度小于或等于1450 MPa, 材质为铜, 铜合金及镍合金的钢的镀镉
Aerospace series. Cadmium plating of steels with specified tensile strength = 1 450 MPa, copper, copper alloys and nickel alloys
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标准查询Aerospace series. Cadmium plating of steels with specified tensile strength = 1 450 MPa, copper, copper alloys and nickel alloys
