twocoreadj.双磁心的(双活性区的)twonum.二；两个two-income family双职工家庭Two lesson teaching两课教学two-boat trawling对拖作业Two - mass system两质量系统two-piece calotte双护盖two-section choke双节抗流圈two-way algorithm混合双向算法two-sided bargain双边讨价还价Two models coupling双模耦合two - hole methed二孔法