carriage spring meaning in English

车架弹簧
轴承弹簧

Five minutes later , swaying easily in the soft carriage springs , kutuzov addressed prince andrey . there was no trace of emotion on his face now
五分钟以后，库图佐夫把脸转向安德烈公爵，坐在柔软的四轮马车的弹簧车垫上平稳地摇摇晃晃。
I have heard the rattle of a cart or carriage spring up suddenly after hours of stillness , and pass , for some minutes , within the range of my hearing as i lay abed
数小时的静默之后，听到马车的卡嗒声忽然响起，然后在我躺着的几分钟里，它进入听力所及的范围又淡出。