Effect of Air-Hole Ratio in Diatomite Coating on Air-Pit Defect on the Outer Surface of Ductile Iron Pipe with Large Diameter是什么意思_Effect of Air-Hole Ratio in Diatomite Coating on Air-Pit Defect on the Outer Surface of Ductile Iron Pipe with Large Diameter在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句