传输损耗

Based on latest CISPR 16-1-4, a new evaluate method for anechoic chamber, SVSWR is introduced.

根据最新的CISPR 16-1-4标准，介绍了一种用于取代传统1GHz～18GHz自由空间传输损耗新的电波暗室评估方法，即场地驻波比测试法。

Fiber attenuation was measured as 6.84dB/m at 1550 nm by the cutback method.

采用剪断法测得在1550 nm波长下光纤的传输损耗为6.84 dB/m。

The information available to a party may be limited, regulated, and received with time delay, and decisions made by one party may influence the decision space and well-being of others.

但是竞标者在竞标前所得到的信息一般是有限的、不准确的、时间上滞后的，所有竞标者之间的竞标策略也相互影响，且竞标系统中存在众多的内在不确定性，如系统需求量、燃料价格、发电和传输损耗等等，因此，电力市场充满着大量的随机因素，竞标具有一定的风险。

The present work solves the ELD problem with Lineflow constraints through effective appli- cation of GA, considering the system transmission losses, power balance equation as the equality constraint, limits on the active power generations of the units and limits on currents in different lines as the inequality constraints. Two test systems, i.e.

目前的工作，解决了在ELD 问题lineflow的限制，通过有效的应用-阳离子遗传算法，考虑到该系统的传输损耗，权力的平衡方程作为等式约束，限制，有源电力几代人的单位和限制电流在不同的线路（ lineflow限制）作为不等式约束。

Key words fast-pulse transmission line; equivalent distributed capacitance model; matching method; numerical computation

实际情况中，N个负载电容沿传输线均匀分布，且传输线的总长度不是很长，即传输损耗在可接受的范围内，2 匹配计算方法

The effect of relative position between light source and tapered fiber on coupling efficiency of tapered fibers is also studied.

研究了锥形光纤的几何形状对锥形光纤的传输损耗和耦合效率的影响。

Compared with other wave-guide material, glass is not so good on the thermal conduction, and its transmission loss is bigger, but it is easy for processing, especially the wave-guide surface can have much higher degree of finish.

虽然玻璃较其它波导材料导热性能较差、传输损耗较大，但由于易加工，尤其是波导面可达到很高的光洁度，且价格低廉，因此硬质玻璃波导CO_2激光器仍具有很高的实用价值。

Using an optical fiber whose transmission loss depends in a linear way on temperature, a thermometric system can be designed that will allow direct measurement of the temperature averaged along the length ...

利用光纤的传输损耗取决于直线方式，对温度，测温系统，可设计，这将使直接测量温度的平均值沿长度的纤维。本文介绍了这种系统可用来测试的可行性，采用稀土掺杂光纤的实际分布测量的平均温度。

At the same time, a detector was used to measured the refractive light intensity under coupling state and uncoupling state.

这两种测试光波导传输损耗的方法具有实验仪器价格低廉，操作简单，测量准确等优点。

To match the boundary conditions, the modified Bessel functions are expanded to the planar wave in the interface. Then the eigenvalue equations of different polarizations are obtained by scalar approximation. At last, the relations between propagation losses and the states of polarizations, the geometric structures of the fiber, the refractive index and thickness of the polymer are calculated.

论文首先给出其等效折射率数学模型，在纤芯和包层中，光场用贝塞尔函数及虚宗量贝塞尔函数的求和表示，在聚合物和金属中用指数函数的求和表示，交界面上采用将虚宗量贝塞尔函数用平面波展开的方法匹配边界条件，然后利用标量近似求出极化D型光纤不同偏振态光场模式的本征值方程，最后通过数值计算得到光纤的传输损耗与抛磨平面和纤芯之间的距离，聚合物粘接材料的折射率和厚度，以及偏振态之间的关系。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。