不同尺度第二相  second-particles with various sized scales

第二、第三掌背动脉  Second or third dorsal metacarpal artery

第二度皮肤灼伤  Burn; second-degree skin

黑色第二度船底防污漆  black second coating antifouling

四跨膜蛋白第二亲水基团基因  TSP2HD

二度二线制  two dimension-two wire

十二度二部复对位  Double counterpoint in the twelfth

邻近度度量  proximity measures

社交亲近度  social closeness

[第]二级光谱  secondary spectrum

[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

〔第〕二代杂种  F2

〔第〕二代杂种分离比  F2ratio

Berthelot第二维里系数  Berthelot second virial coefficient

CMOS第二代电流控制传输器(CCCⅡ)  cmos cccii

CMOS电谐调第二代电流传输器(ECCⅡ)  CMOS electronically tunable second generation current conveyor(ECC

C第二次世界气候会议  SWC