two gaps二间隙twonum.二；两个two-dimensional immunoelectrophoresis二维免疫电泳, 双向免疫电泳法two thousand seven hundred and thirteen(=2713) 二千七百一十三two-dimensional two-pulse canceller自适应two thousand two hundred and twenty two(=2222) 二千二百二十二two dimensional chromatoelectrophoresis双向色谱电泳two-dimensional laser scanning system二维激光扫描系统two thousand six hundred and eighty two(=2682) 二千六百八十二two thousand five hundred and sixty two(=2562) 二千五百六十二Two-line intersubspecific hybrid flee两系杂交稻two thousand six hundred and forty nine(=2649) 二千六百四十九