two-up双联印刷twonum.二；两个Two- dimensional reversible map二维可逆映射two-variable one-way function双变量单向函数Two-dimensional soil site model二维土体模型two-weight weak type inequality双权弱型不等式two-group discriminant analysis两类判别分析two-lobed epitrochoidal housing双弧外旋轮线缸体two thousand six hundred and nine(=2609) 二千六百零九two-dimensional state of stress双向应力状态Two's company but three's none.一种失去运动能力的癫痫症。two-dimensional pointing mirror二维指向镜