第二级选择机  second slector

第二级选组机  second group selector

过[氧]二碳酸二（二级丁酯）  di-sec-butyl perdicarbonate; di-sec-butyl peroxy-dicarbonate; di-sec-butyl peroxy-dicarbonate; di-sec-butyl perdicarbonate

[第]二级光谱  secondary spectrum

2-呋喃甲酸二级丁酯  2-furoic acid sec-butyl ester

2-环十二二酮  2-dione

3,6-二-[二甲氨基]-二苯并碘六环镝二氨三乙酸配合物  6-di-(dimethylamino)-dibenzopyrodonium salt of dysprosium dinitriltriacetate complex anion

3－二（二苄氧膦酰基）丙醇  3-bis (dibenzyloxyphosphoryl) propanol

3－二（二苄氧膦酰基）丙酸  3-bis (dibenzyloxy phosphoryl) propionic acid

4,4-二(二乙氧膦酰)-丁酸  Bis(diethoxyphosphoryl) butanoic acid

DNA二级结构  DNA secondary structure

LED(发光二级光)  arbitrage behavior

mRNA二级结构  secondary structure of mRNA; mRNA secondary structure

N,N-二[二(3-甲氧基丙基)膦基乙基]-2-乙氧基乙胺盐酸盐  Bis(dimethoxypropylphosphinoethyl)-ethoxyethylamine(PNP5)hydrochloride

PIN硅光电二级管  Si PIN diode

RNA二级结构  Secondary structure of RNA; RNA secondary structure; Secondary structures; RNA secondary structures; RNA secondary; Ribonucleic Acid RNA secondary structure

RNA二级结构预测  RNA secondary structure prediction

RNA二级结够  RNA secondary structure

rRNA二级结构  rRNA secondary structure