In this paper, when assuming a Gaussian near field distribution on the cross section of single-mode fiber, it has been derived theoretically that the far field is also a Gaussian distribution.
本文在假定单模光纤横端面上的近场为高斯分布的前提下，从理论上导出了其远场分布也是高斯分布。
The mode dispersion characteristics and cut-off properties of rib waveguide with trapezoidal cross section are investigated.
变换伽辽金法对具有梯形截面脊形光波导的本征模式特性作了分析。
The main mode of thinking on the study of regional historical geography is erecting the continuous geographical cross section.
建立连续的区域历史地理剖面是区域历史地理研究的重要思路。
As the ratio of thickness to height of cross-section increases, the failure range decreases and the failure mode has the tendency of shearing failure.
随着衬砌厚跨比的增大，混凝土衬砌的破坏范围逐步减小，衬砌更倾向于剪切破坏。
On the fracture cross section HGB presents following three failure modes: extraction from its matrix, cross-rupture and smash, while the cross-rupturing is the primary mode of failure.
断面上玻璃微珠在基体中有拔出、断裂和破碎三种状态，以断裂破坏的玻璃微珠为主导破坏形式。
The instrument changes the two-dimensional expression mode of body data, and can get feature of human body static attribute and longitudinal cross-section.
由于该仪器改变了人体数据二维的表达方式，它可以获取人体静态表层特征和人体纵横截 面的特征。
The instrument changes the two-dimensional expression mode of body data, and can get feature of human body static attribute and longitudinal cross-section.
由于该仪器改变了人体数据二维的表达方式，它可以获取人体静态表层特征和人体纵横截 面的特征。
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