该种的正模和副模标本存放于北京师范大学鸟类标本馆。
The holotype and paratype specimens are deposited in the Bird Museum of Beijing Normal University.
本文讨论了这类非互易旋光张量下的波矢面及简正模的基本形式。
This paper discussed the basic form of the wave-vector surface and normal mode of nonreciprocal gyrotropic dielectric tensor.
这被称为正模标本,并且它必须在一个很好的条件下,其数字和功能特性完好。
This is known as a holotype and must be in very good condition, with all its digits and features intact.
本文用代数的方法求出了耦合谐振子的简正模,过程简单且物理意义清晰。
Normal mode of coupled harmonic oscillator is obtained by means of algebra, the procedure is simple and the physical meaning is clear.
他们正计划建造一座和原来边境城镇一模一样的复制品。
They are planning to build a faithful recreation of the original frontier town.
在一栋扭曲变形的建筑外面,店主模地干一的脸上露出了笑容, 腋下正夹着一台电脑,他高兴地喊道,"我工作用的电脑!
Out of one deformed structure, a shopkeeper, Kanichi Mogi, emerges with a smile on his face and a computer under his arm.
今天的快速原型塑模,正渐渐成为明天的快速生产。
Today’s rapid prototyping, in other words, will shade into tomorrow’s rapid manufacturing.
今天的快速原型塑模,正渐渐成为明天的快速生产。
Today's rapid prototyping, in other words, will shade into tomorrow's rapid manufacturing.
本文对花键整体凹模正挤工艺、多辊冷挤压成形工艺、冷滚轧成形工艺、平板齿条搓挤工艺等花键冷成形技术和特点进行介绍。
This article introduced some methods of spline cold forming technology: forward die extrusion die forming, mud-rolls die extrusion forming, cold rolling forming and plate type cold rolling forming.
用扫描电子正微镜观察20多个失效金刚石拉丝模的模口形貌。
More than 20 pieces of failure wire drawing diamond dies were analyzed by SEM.
并导出了平底及锥形凹模内正挤空心件时单位挤压力的计算公式。
The formulas of extrusion for hollow parts in the square dies and the conical dies has been derived.
与正折射率缺陷情形相比较,负折射率缺陷间的相互作用对缺陷模的影响更大,局域模谱线更宽。
Compared with the case of positive refractive index structural defects, the influence of the interaction between defects on defect modes is stronger, the spectrum-width of defect mode is broader.
利用光滑模和K -泛函给出了一类多元三角多项式算子同时逼近的正逆定理。
Using the modulus of smoothness and K-functional, direct and inverse theorems of simultaneous approximation for a kind of multivariate trigonometric polynomial operators are established.
本文阐述工作于正、负群速色散区中的光脉冲注入锁模的物理机制的区别。
The article discusses the differences in physical mechanism of mode locking by laser pulse injection between the dispersion region at positive group velocity and that at negative group velocity.
得到下面主要结果:(1)各个高度上水平风速模涨落的概率分布近于正态律。
The main results are: 1. The horizontal wind speed fluctuations at any height may be approximated by a Gaussian distribution.
复极点的实部是不稳定局域模的能量,虚部是它寿命的倒数,自然地得到了寿命为正的限制。
The real part of the complex pole is the energy of an unstable localized mode, and the reciprocal of the imaginary part is its life-time. Naturally the life-time is positive.
基于滑移线场的简化流动模型,运用数学方法求解出了一种锥形模正挤压变形力的最佳上限解,并将该上限解用通用解析式表达出来。
The deforming force of cone-die direct extrusion is solved by a mathematic method based on the simplified flow model of slip line field.
基于滑移线场的简化流动模型,运用数学方法求解出了一种锥形模正挤压变形力的最佳上限解,并将该上限解用通用解析式表达出来。
The deforming force of cone-die direct extrusion is solved by a mathematic method based on the simplified flow model of slip line field.
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