Sagging springs. Spring will sag from overloading or if they have become weak. Loss of the shim from the coil spring seat on the coil-spring suspension will cause the spring to seem shorter and to sag.是什么意思_Sagging springs. Spring will sag from overloading or if they have become weak. Loss of the shim from the coil spring seat on the coil-spring suspension will cause the spring to seem shorter and to sag.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句