1)  N1-N21 reservoir
N1-N21油藏
2)  E_3~1 and N_1-N_2 reservoirs
E31和N1-N21油藏
1.
In this paper,the geochemical characteristics of crude oils in E_3~1 and N_1-N_2 reservoirs of Gaskule oilfield were synthetically studied,and genetic environments,matrix types,maturity,and genesis for these studied oils were discussed.
油源研究表明E31和N1-N21油藏原油由第三系盐湖相生油岩中生物脂类与可溶有机质和干酪根一起在低成熟阶段所生成。
3)  N1
N1
1.
ResultsCompared with complete faces,incomplete faces enhanced the amplitude of N1 on the occipito-temporal scalp bilaterally,with the right hemisphere advan.
结果与完整面孔相比,不完整面孔在枕颞区诱发出了明显增大的N1波,并且存在着右侧偏侧化优势;与完整面孔相比,不完整面孔诱发的N2波的峰潜伏期延长。
2.
A new k-(k1,n1;k2,n2;…;kt,nt) threshold secret sharing scheme based on discrete logarithms and threshold secret sharing scheme was proposed.
基于离散对数的安全性和(k,n)门限方案给出了一种新的k-(k1,n1;k2,n2;…;kt,nt)门限方案。
3.
A new generalized version of the known (k,n) -threshold secret sharing scheme, called k-(k1, n1; k2, n2;…;kt,nt) -threshold secret sharing scheme, is proposed.
该文考查了此类情形,将(k1, n1; k2, n2;…;kt,nt)–门限方案加以推广,提出了更为一般的 k-(k1, n1; k2, n2;…;kt,nt)-门限方案及其实现方法。
4)  N_1+N_2
N1+N2
5)  S_(N1) reaction
S_（N1）反应
6)  H5N1 subtype
H5 N1亚型
参考词条
补充资料：21-Hydroxypregn-4-ene-3,20-dione 21-acetate
分子式：C23H32O4
分子量：372.51
CAS号：56-47-3

性质：结晶（丙酮）或针状结晶（乙醇），空气中稳定。熔点154-160℃（159-161℃），高真空时升华。[α]10/D-177°（乙醇）/[α]20/D+168-176°（二噁烷）。微溶于乙醇、甲醇、丙酮、乙醚、二噁烷、植物油，不溶于水。

制备方法：暂无

用途：羟孕酮琥酯钠的中间体。

说明：补充资料仅用于学习参考，请勿用于其它任何用途。