二合元音的核心 diphthong nucleus
十种相邻的二核苷酸对 nearest neighbor doublets
二核苷酸的寡核苷酸链 CPG ODN ; CpG oligodeoxynucleotides
侧的二核苷酸重复序列 FRAXAC ; fragileXAC2repeat
二硫化碳的核心 disulphide core
通常指两个位于胚囊中间的单倍体核，他们可能融合形成一个二核的中央细胞。
Polar nuclei The, usually two, haploid nuclei found midway along the EMBRYOSAC, forming a binucleate central cell. They may fuse to form the diploid definitive nucleus.
在2008年八月，v1309发生了最后的裂变，两个星核也终于合二为一，其发光的亮度也随之急剧提升。
V1309's final burst then occurred in August 2008 when the stars' cores finally became one and its brightness increased rapidly.
欧盟各国外长星期二仍旧坚持认为，会谈是解决伊朗核僵局的唯一途径。
European Union ministers remained adamant Tuesday that talks were the only way to solve the impasse over Iran's nuclear program.
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