方向性

Because of the special characters-excellent direction, exclusive monochromatic and intense correlation, laser is applied more and more.

由于激光的高方向性，高单色性，高相干性等优点，使激光的应用得到了广泛的发展。

Considering that fz6-related genes are consered between species, the same self-organizing system likely "applies to all mammals, and also to bird feathers and fish and reptile scale orientation," Nathans says.

考虑到fz6相关基因在种群中有保留，Nathans说，同样的自体组织系统可能"适用于所有的哺乳动物，也包括鸟类羽毛，鱼雷和爬行类鳞片的方向性。"

This will provide a guideline for the future development of neutrino physics, and in particular for the understanding of the absence of anti－matter in the universe.

这将对中微子物理的未来发展提供方向性指导，特别是对理解宇宙中"反物质消失之谜"具有重要意义。

Dispersal, in contrast, is a nondirectional movement away from the birth or breeding site.

相反，扩散是离开出生或繁殖地的非方向性运动。

The metal ions form ionic bonds, which are nondirectional, with oxygen atoms that previously had been bonded rigidly to specific Si atoms.

金属离子与氧原子形成无方向性的离子键，而氧原子之前一直牢固结合在特殊的硅原子上。

Because of the nondirectional property of ionic bond and the fully delocalized property of pi electrons on carbon layers, translation will not change the electronic structure of carbon layers, resulting in that A-GIC and AE-GIC hare quite good lubrication as well. The electrons come from metals mainly transfer to the delocalized pi orbitals of carbon layers, and the increase of delocalized electrons will make metal graphite intercalation compound more electro-conductive than graphite itself. Because ionic bond between metals and carbon layers is weaker and its lattice energy is much less than that of typical NaCl crystal, so metals could be left from interlayers. The Mulliken populations of C-C in intercalation compounds are smaller than that of graphite, and the HOMO energy level of GIC is higher than that of graphite too. These Lead to that GIC will easier be oxidized.

由于离子键没有方向性，又由于碳层中的π电子是充分离域的，所以碳层不会由于平移而改变其电子结构，金属石墨层间化合物仍具有很好的润滑性；金属失去的电子主要转移到碳层的离域π轨道中，碳层离域电子增多使金属石墨层间化合物的导电性比石墨增强；金属与碳层间的离子键强度比较弱，其晶格能远小于典型的离子晶体，因而金属易从石墨层中脱出；金属石墨层间化合物中的C-C间Mulliken布居值小于石墨中C-C间的值，且金属石墨层间化合物的HOMO能级也高于石墨的HOMO能级，所以石墨层间化合物中的碳原子较石墨更易被氧化。

While using off-center charges brought some improvements, the directionality of hydrogen bonds have not been significantly improved.

尽管采用偏离中心的电荷模型能稍微改进蛋白质模拟结果，但对氢键方向性的改进并不显著。

To meet this requirement, the new relay developed consists of a combination of directional overcurrent relay and directional undervoltage relay.

为满足这一需求，新开发的继电器组成的组合定向过压继电器流保护继电器和方向性的欠压继电器。

In the study of peptide formation from phosphoryl aspartic acid with ethyl alanine, the N-phosphoryl peptide ester was isolated and identified by 1D and 2D NMR. It was found that only α-dipeptide ester, no β-dipeptide ester, was formed in the reaction.

实验发现N-磷酰化极性氨基酸在没有活化剂、缩合剂的水溶液中能够发生成肽反应，且生成的磷酰化二肽具有方向性：成肽产物的N端氨基酸来自N-磷酰化氨基酸，成肽反应发生在其C端。

RESULTS: The positive staining cells mostly included ependymal cells of myelocoele, glial cells, motor neurons, and epithelial cells of spinal pia mater. The staining was mainly located on the cell membrane. Most importantly, it displayed certain directivity in the glial cells, mainly at the membrane side contacting with capillary endothelial cells.

结果： 免疫组织化学染色结果显示阳性着色细胞包括有胶质细胞、中央管室管膜上皮细胞、脊髓前角运动神经元、软脊膜上皮细胞，着色部位主要在细胞膜，其中在胶质细胞表现出一定的方向性，主要分布在与毛细血管内皮细胞接触的一侧。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。