The conversion film is probably constituted of amorphous and pored alloying tannate chelate.
这
膜很可能是由有一定孔隙的非晶态合金单宁酸膜层构成.
The conversion film is probably constituted of amorphous and pored alloying tannate chelate.
这膜很可能是由有一定孔隙的非晶态合金单宁酸膜层构成.
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