When the slenderness ratio is less than 1/2 or the hot compression stress is not bigger than the wet compression strength of the molding sand, the rat tail should never come into being.是什么意思_When the slenderness ratio is less than 1/2 or the hot compression stress is not bigger than the wet compression strength of the molding sand, the rat tail should never come into being.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句