开式谐振腔的Q值由衍射损耗，反射损耗，耦合引入的外部损耗共同决定。
Q factor of an open resonator is determined by the diffraction loss, reflection loss and external loss introduced by coupling as a whole.
应用于空气折射率梯度对激光准直的影响和不均匀泵浦引起的激光器附加衍射损耗。
As their applications we have studied the effect of air index gradient on laser alignment and the additional diffraction loss of laser caused by inhomogeneous pump.
提高端面抽运功率占有率，可在一定程度上减小热透镜效应对振荡光束尺寸和衍射损耗的影响。
The influences of the thermal lens effect on the oscillation beam radius and diffraction loss can be reduced by increasing the proportion of the end-pumping power.
结果表明来自粗糙海面的反射是计算雷达波沿粗糙海面传播损耗和刃形峰对雷达波衍射损耗的不可忽视的重要因素。
The results show that reflection from rough sea surface is an important factor in calculating propagation loss over rough sea and a knife-edge in the presence of rough sea surface.
固定损耗是由系统自身所用材料、表面处理决定的，包括菲涅耳损耗、球差损耗、衍射损耗、色散损耗、吸收损耗等。
The invariable loss comes from the materials and surface processing of the system itself, such as the loss of Fresnel, ball aberration, diffraction, chromatic aberration and absorb.
为研究粗糙海面中的岛屿对雷达波传播的影响，本文采用比较简单而又符合实际的模型，计算了电波在粗糙海面条件下，岛屿对雷达波的衍射损耗。
To study the influence of an island on radar based on coast, we utilize simple and realistic model to calculate diffraction loss over an island in the presence of rough sea surface.
文中讨论了光栅结构参数，入射波参数对衍射效率的影响以及金属光栅的损耗。
The effects of grating structure parameters and incidence wave parameter on diffraction efficiency are investigated . The loss of grating is also given.
对无衍射光束———贝塞尔高斯光束通过硬边光阑时的功率损耗作了研究，给出了普适的损耗公式。
The losses Bessel-Gaussian beams, a kind of non-diffracting beam, propagating through a hard aperture are studied, and a general formula is derived.
采用SEM、X射线衍射分别对复合介质的微观结构及其相组成进行了观察与分析，并获得了制备低损耗复合介质的最佳热压工艺制度。
The microstructure is observed by means of SEM and phase composition analyzed by XRD. On the basis of the investigation, an optimum heat press system is established.
采用SEM、X射线衍射分别对复合介质的微观结构及其相组成进行了观察与分析，并获得了制备低损耗复合介质的最佳热压工艺制度。
The microstructure is observed by means of SEM and phase composition analyzed by XRD. On the basis of the investigation, an optimum heat press system is established.
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