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1·The negative plate is made of iron or rustless steel.

负极片由铁片或不锈钢片制成。

2·This paper summarizes the research work done to grind and polish rustless steel pipe.

本文总结了砂带磨抛不锈钢管的研究工作。

3·Our factory devotes in developing and producing easy to cut steel, the stainless steel, the rustless iron and each kind of alloy steel and so on.

本厂致力于开发与生产易切削钢，不锈钢，不锈铁及各种合金钢等。