A medium modulus polyester alloy suited for injection molding of Air Bag Deployment Doors.It has a nominal durometer hardness of 55D and contains fine particle size carbon black.是什么意思_A medium modulus polyester alloy suited for injection molding of Air Bag Deployment Doors.It has a nominal durometer hardness of 55D and contains fine particle size carbon black.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句