The new hydrolysis-resistant polyesters are costeffective materials for those applications which must survive the Class III and IV USCAR exposures.是什么意思_The new hydrolysis-resistant polyesters are costeffective materials for those applications which must survive the Class III and IV USCAR exposures.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句