Taking bicycle rust prevention as an example, write out what other methods can prevent rust besides keeping the surface of iron products clean and dry. (1) Frame surface _ _

(1) Coating a layer of paint on the surface of the mirror frame can not only isolate water and oxygen, thus preventing rust, but also make the mirror frame beautiful.

So, fill in: apply a layer of paint.

(2) plating a layer of metal on the surface of the steel ring can not only isolate water and oxygen, so as to prevent rust, but also maintain the metallic luster of the steel ring.

Therefore, filling: plating a layer of metal.

(3) A layer of lubricating oil on the chain surface can prevent rust, and it is not allowed to spray paint or plate metal, because it is easy to wear off.

So, supplement: apply a layer of lubricating oil.

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