The selection of parting line,the determination of round sprue runner diameter,the design of round sprue runner shape and pouring gate form were presented.是什么意思_The selection of parting line,the determination of round sprue runner diameter,the design of round sprue runner shape and pouring gate form were presented.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句