keyless什么意思解释？

keyless的音标：keyless的英式发音音标为：['ki:lɪs]keyless的美式发音音标为：['kilɪs]...

The structure and working principle of a keyless connection bush is introduced.介绍了一种无键联结衬套结构及工作原理.Other niceties are a reversing safety camera, an engine start button and keyless entry.其他细节是扭转安全摄像头, 发动机启动按钮和无钥匙进入.Keyless...