单词	mechanical drill
释义	mechanical drill 机械式操练
随便看	projective metric space projective minimal surface projective modality projective mode projective module projective modules projective morphism projective nerve projectiveness projective normal projective object projective objective projective objects projective ocular projective operator projective operator matrix projective operators projective parameter projective pencil of lines projective pencil of plane projective pencil of planes projective pencils of lines projective pencils of planes projective perimeter projective personality measure