第二、第三掌背动脉
Second or third dorsal metacarpal artery
[第]二阶舒勒不稳性
second order Shul instability
[第]二阶相变
second-order phase transition
《一九XX年第二季经济报告》
Second Quarter Economic Report 19XX
Berthelot第二维里系数
Berthelot second virial coefficient
CMOS电谐调第二代电流传输器(ECCⅡ)
CMOS electronically tunable second generation current conveyor(ECC