查询词典 central angle

Considering the factors such as randomness of natural lightning locus and the coexistence of primary and secondary leaders, it is necessary to lead in the concept of dynamic lightning protection shielding angle. It is suggested that the angular bisector of practical protective angle formed by ground wire or earth pin in UHVAC transmission line and conductor should be aligned with the direction of lightning leader as well as the ratio of vertical span to horizontal span and the impact of wind speed should be considered.

考虑自然闪电轨迹的随机性和雷电主先导与次先导并存现象等因素，有必要引入动态防雷保护角概念，建议特高压交流线路中地线对导线的实际保护角形成的角平分线应与雷电先导的来向一致，并应计及垂直档距和水平档距的比值和风速的影响。

The structure of β-HMX,such as bond length,bond angle,dihedral angle,is analyzed theoretically.

实验和计算结果表明，在B3LYP/6-31G水平下的理论值接近β-HMX的X衍射实验值。

According to this construction, ethylene is predicted to have an H-C-H bond angle of 120°, the measured angle of 117.5°being reasonably close to this value.

按照这种结构，预计乙烯的键角为120°，测得的键角是117.5°，相当接近与该值。

The change of bond distance and bond angle leads to the reduce of the symmetry, and makes the gap to be wider and shallow, and the gap does not change with the incident angle.

此键长键角的不归一特性的增大所带来的对称性降低导致了带隙变宽变浅和不随入射角变化。

Forth, different to the previous studies focusing on the standard securities from the angle of complete contract, the dissertation deeply studies the contract design of convertible bond from the angle of incomplete contract.

已有的研究主要是从完全契约的角度针对标准金融契约工具展开的，而本论文则从不完全契约理论下控制权动态配置的新的前沿视角深入研究了可转债融资契约设计。

The statistic results of ring,density,bond length,bond angle,dihedral angle and X-ray radial distribution functionof the models are given.

给出了模型的环、密度、键长、键角、二面角及X射线径向分布函数的统计结果。

These results reveal that, as an intrinsic property of the wave function of atoms, the angle of the probability distribution of the angular two-electron density is approximately equal to the bond angle of the molecular which usually can be explained by the hybridization theory.

结果显示，作为原子波函数的内禀性质，双电子密度最可几角分布的角度与通常由分子杂化轨道理论解释的相关原子的分子的结合键角近似相等。

Effects of helix structure disorder about the hydrogen bond length and helix angle on charge transport of Poly-Polyhave been studied. The results indicate that the hydrogen bond length disorder has a significant effect on charge transport,while the case is contrary in the situation of helix angle disorder.

在双螺旋结构无序中研究了氢键键长无序和螺旋角无序对Poly-Poly电荷输运的影响，结果表明：氢键键长无序对其电荷输运有重要的影响，而螺旋角无序对其电荷输运影响不大。

Results also reveal that the contact angle declines continuously with the increase of addition of carbides,and simultaneously the contact angle declines continuously with the increase of the bond energy of ceramic phases.

研究还发现，碳化物的添加使体系接触角持续下降，同时接触角随键能的增加持续下降。

However, the diffracted angle and its variation due to SAW gyroscopic effect is very tiny, so the key to the plan is whether such a tiny Bragg diffractive angle can be measured with success.

理论计算表明布拉格衍射角及其变化十分微小，所以能否在实践中成功地检测受Ω调制的布拉格衍射角，关系到SAW陀螺效应声光探测和检测方案的成败。

Must have Coordination and negotiation skill, flexible ideas, and be punctilious person.

必须具备较好的协调与谈判能力，头脑灵活，工作认真仔细

Result: 18 patients are all with simple eye.The pigment mole lies in nasal and temple sides of the ball conjunctiva,in which 2 lie in lacrimal caruncle and semilunar plica.

结果：18例患者均为单眼，色素痣大多数位于内外侧睑裂部球结膜面，2例位于泪阜及半月皱襞，经激光治疗后，10例色素痣消失，有5例行再次激光后消失，2例行第三次激光后消失，1例第四次激光后消失。