1. Note the material and anticorrosion requirements of Sand Scraper, Harrower, Otherwise supplied according to carbon steel with normal anticorrosion.
   分别注明刮砂机、耙砂机的材质和防腐要求，不注明表示均按碳钢和普通防腐订货。
2. The improved performance of anticorrosion was resulted from the increase of coating density, the decrease of open hole percentage and pylome numbers.
   这是由于纳米掺杂使涂层密度提高，开孔率、通孔率降低，组织均匀性提高所致。

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