two holeadj.双孔的twonum.二；两个two-dimensional compensation二维补偿two exemptions and one subsidy两免一补two dimensional surface states二维表面态two variable linear regression二元线性回归模型two-head video tape recorder双磁头磁带录像机,二磁头磁带录像机two-roll cross wedge rolling二辊楔横轧Two people not represent vs.两个人不代表我们。two-point LOD score analysis两点法LOD值分析two-circuit prepayment meter双路预付电度计,两路预付电度计two-phase solvent extraction双液相萃取