two coat双面涂布twonum.二；两个two-pass horizontal regenerator双通路卧式蓄热室two-dimensional slope stability二维的土坡稳定two level tablespoonfuls of sugar平平两大汤匙糖two-speed overhead countershaft双速天轴two-direction scaling functions双向尺度函数two-mode squeezed vacuum states双模压缩真空态two thousand one hundred and five(=2105) 二千一百零五two-dimensional Walsh transform二维离散Walsh变换two-layer-metal top electrode双层金属上电极two-way clamp sleeve plug valve双向夹套柱塞阀