查询词典 tetrad

Calculate the Einstein tensor from a given metric in a tetrad or in a coordinate frame.

读，写，简化，替代和区分数学表达式；定义张量和张量运算法则；从一个给定的公制中在四分体或者同等结构中计算Einstein 张量。

The characteristics of tetrad was that the nucleus and Golgi bodies being in the active state.

四分孢子的显著特征是细胞核和高尔基体呈活跃状态。

Under the guide of phase equilibrium results, over 150 new solid complexes were prepared. IR, reflecting, UV, FS, and Ramman spectra for these complexes were investigated and the regularity of "Tripartite effect","Tetrad effect","Nephelanxetic effct","Oddo Harkins" was observed.

在相平衡结果指导下制备了150余种新型固态配合物，研究了它们的IR光谱、反射光谱、UV光谱、FS光谱和拉曼光谱，发现了其中存在的"三分组效应"、"四分组效应"、"电子云扩大效应"、"Oddo-Harkins规律"。

Micronucleoli can be seen from leptotene through tetrad.

微核仁在PMCs中数目变化范围在1～7之间。

There is only one layer of parietal cells at the stage of sporogenous cell, megaspore mother cell and tetrad .

造孢细胞，大孢子母细胞和四分体时期，周缘细胞仅1层。

The megaspore tetrad is linear. The chalazal megaspore develops into an embryo sac of the polygonum type.

大孢子四分体线形排列，合点端大孢子为功能大孢子，胚囊发育为蓼型。

The megaspore mother cell is located at the 3rd or 4th layer of cells in the nucellus top end. It divides transversally to form a linear megaspore tetrad, and the megaspore at the chalazal end develops into the embryo sac mother cell.

大孢子母细胞位在珠心顶表皮下第三或四层细胞处，经横分裂后产生一直线形的大孢子四分体，其中位居合点端的大孢子发育成胚囊母细胞。

In first stage,from the beginning of pollination to megaspore tetrad,pollen tubes grow axially,passing through gynostemium to the ovary and from proximal placenta along ovary wall develop upward.

花粉在柱头上萌发和生长后，花粉管沿着花柱一直延伸到子房，进入胚囊释放精细胞，实现精卵结合，这就是亲和受精过程[1]。

In the functional cell such as archesporial cell,megasporocyte,dyad,tetrad and youngmegaspore,among which the three cells close to micropyle end do not degeneratewholly,no clear starch grains were observed as well as in the embryo sacs from singlenucleate embryo sac to 8-nucleate one just forming.

淀粉粒变化有规律性，在孢原细胞、大孢子母细胞、二分体、四分体和早期的大孢子（即四分体中近珠孔端的3个细胞未完全退化）等功能性细胞中未观察到明显的淀粉粒。

Misdivision of translocation chromosome at anaphase Ⅰ and rye chromatin micronucleus at tetrad stage were observed.

在遗4212×遗4095的F2代中检测到一个具有中间偃麦草染色体小片段易位到小麦染色体端粒部分的小麦-中间偃麦草易位植株。

For a big chunk of credit-card losses; the number of filings (and thus charge-off rates) would be rising again, whether

年美国个人破产法的一个改动使得破产登记急速下降，而后引起了信用卡大规模的亏损。

Eph. 4:23 And that you be renewed in the spirit of your mind

弗四23 而在你们心思的灵里得以更新