速度感傳器velocitytopreventplantgrowth: 不長(zhǎng)草流速velocityreversal: 速度反向velocityvariationtube: 變速管 速調(diào)管 速度調(diào)制管velocityofpropagation: 傳播速度velocity, acoustic: 傳聲速度下載手機(jī)詞典可隨時(shí)隨地查詞查翻譯