单词	凹陷焊缝
释义	同凹陷焊缝 -- 火山口
随便看	digital community network digital compact cassette digital compact cassette recorder digital compact cassette recorder {=dcc} digital compact cassette 小型数字盒式磁带 digital compact cassette，dcc digital compact disc digital--companding digital comparator digital comparator--dc digital comparator，dc digital compensator digital complement digital components testing digital compression digital compression modem digital compression of increased transmission digital computation digital computer digital--computer digital computer association digital computer program digital computer programming digital computer programming，dcp digital computer program，dcp