[物理] 利用接觸電刷檢測記錄載波 contact sensing: 觸點(diǎn)讀入contact points and brushes tension gauge: 觸點(diǎn)及電刷電壓計(jì)contact-sensing device: 觸發(fā)引信non-contact level sensing: 非接觸式液位傳感contact magnetic record: 接觸式磁記錄下載手機(jī)詞典可隨時(shí)隨地查詞查翻譯