twopennyadj.两便士的；不足道的；低廉的n.从前的一种啤酒；头twonum.二；两个two-dimensional synchronous resonance therapy二维同步共振疗法two-fiber unidirectional path protection rings二纤单向通道保护环Two-dimensional difference gel electrophoresis双向、差异凝胶电泳two-stage biological contact oxidation process两段生物接触氧化two-channel disk phonograph sound reproduction双声道盘式唱机放声two-dimensional independent component analysis二维独立元分析Two-dlmensional difference gel electrephoresis双向电泳two-dimensional convection-diffusion problem二维对流-散方程two rotating side-by-side circular cylinders并列旋转双圆柱two-parameter stochastic differential equation两参数随机微分方程