The quality of bentonite has a key effect on the formation of sa nd inclusion and scab,and also has important effect on the formation of some ot her defects of castings.是什么意思_The quality of bentonite has a key effect on the formation of sa nd inclusion and scab,and also has important effect on the formation of some ot her defects of castings.在線翻譯_英語_讀音_用法_例句