noun 下载 🔗分享 纳米,毫微米 An SI subunit of length equal to 10-9 metres. Symbol: nm Examples : "Many computer chips have components that measure only a few nanometres in size. " 很多电脑芯片的组件尺寸只有几个纳米。 unit science physics technology number 与AI对话词汇游戏阅读练习