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 heteroscedastic discriminant analysis2维异方差鉴别分析（2DHDA）two-dimensional differential in-gel electrophoresis二维差异凝胶电泳two dimensional sds-polyacrylamide gel electrophoresis二维十二烷基磺酸钠-聚丙烯酰胺凝胶电泳, 双相十二烷基磺酸钠-聚丙烯酰胺凝胶电泳two-dimensional Otsuadaptive thresholding segmentation二维Otsu阈值分割Two-dimensional perfect supplementary quaternary array最佳四元二维互补阵列Two-Dimensional Chromatographic Correlation Spectroscopy二维色谱相关光谱法two-dimensional liquid chromatography-mass spectrometry二维液相色谱-质谱联用two-stage lithiumbromide absorption refrigerating machine两级溴化锂吸收式制冷机two-shell lithiumbromide absorption refrigerating machine双筒型溴化锂吸收式制冷机Two-Dimensional Infrared Correlation Spectroscopy Analysis二维红外相关光谱法的分析