反向電壓backwardwave: 反向波backwardunloadingelevator: 后卸升運(yùn)器backwardwelding: 后傾焊 后退焊 向右焊backwardstation method: 后向測(cè)點(diǎn)法backware: 逆波,反向波下載手機(jī)詞典可隨時(shí)隨地查詞查翻譯
