Based on the pouring test anavailable additives and the composition of core sand which can efficiently eliminate the veining defect in pin holes ofSi-Mn cast steel crawler plate is obtained.是什么意思_Based on the pouring test anavailable additives and the composition of core sand which can efficiently eliminate the veining defect in pin holes ofSi-Mn cast steel crawler plate is obtained.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句