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A semiconductor optical amplifier model is employed in which the self birefringence of SOA due to stress is taken into account. The integral action of the birefringence of the fiber and the PC is represented with a Jones matrix of linear retarder.

半导体光放大器采用由张应变引起的自身双折射理论模型，光纤的双折射效应和偏振控制器对光的偏振调节作用综合用一个线性双折射琼斯矩阵表示。

In this paper, using directed acyclic graph to represent the partial order constraints between these tasks in the system, a model of real time system is established with task attributes. a schedulability test algorithm for these tasks in the system is presented based on a series of theoretical analyses without preemption.

使用有向循环图来描述任务间的偏序关系，在以任务属性为参数的实时系统模型基础上，通过理论分析了在非抢占的条件下，这类系统中非周期任务和与之成偏序关系的严周期任务间的可调度性判定方法。

A polarizing plate is provided and includes a polarizing film and two transparent protective film, at least one of the two transparent protective films being an optical compensation sheet, the optical compensation sheet being a cellulose acylate film having a thickness of from 40 m to 180 m.

本发明提供了一种偏振片，其包括偏振薄膜和两个透明保护薄膜，该两个透明保护薄膜中的至少一个是光学补偿片，该光学补偿片是厚度为40～180μm的纤维素酰化物薄膜。

Results show that during the snowstorm disaster, under the large scale background with "trough in south and ridge in north", strong cold air caused by prevailing northerly wind in northern Asia wedged into low level atmosphere over Southeast China and formed a "clod cushion". At the same time, warm-wet air was also transported to Southeast China by southerly wind. The vertical shear of winds from cold to warm airflows produced strong upward motion and then, the warm-wet air over the cold air wedge was driven to rise. Finally, the structure of "warm cover" and "cold cushion", as well as corresponding vertical circulation over the converging frontal zone came into being.

研究结果表明，灾害发生期间，中国北方中低层大气盛行偏北气流，使较强的偏北冷空气"楔入"中国东南部低层大气，构成低层"冷垫"，同时偏南暖湿气流源源不断地将大量水汽输送到中国东南部，冷暖气流交汇及其垂直切变导致强烈的上升运动，构成了"冷垫"上空的"暖盖"及"南槽北脊"反位相环流汇合锋区的垂直环流结构。

Unlike the canonical extension,the number of algebraic completion of a poset may be more.

一个偏序集的代数完备可能有多个，可是，当偏序集是并半格时，代数完备在序同构意义下却是唯一的。

Based on the Jones matrix method and the reflect characteristic of coating film on mirror, the physical model of polarizing beam splitting in altazimuth Coudé telescope is built.

基于镜面膜层复振幅反射特性，采用琼斯矩阵描述方法，建立了偏振分光物理模型，研究了共孔径发射和接收偏振耦合分光的效率问题，并与实验结果进行了比较。

Nonlinear elliptic partial different equations of second order is amain branch of nonlinear partial different equations.It has many ap-plications in mathematics,physics,science and technology,engineer-ing.

二阶非线性椭圆型偏微分方程是非线性偏微分方程的重要分支，它在数学、物理、科技和工程中有着广泛的应用。

A pragmatic exploration of anaphoric repair in conversation;2. And from this point of view,taking anaphoric repair as an example,repair function of RD has been scrutinized.

在Geluykens的广义右偏置结构范畴的基础上，把对右偏置结构的探讨延伸至人际会话语篇，提出一个用以充分考察其等级性特征的等级连续体；并在此基础上，以照应修正为例，对这一句法结构的修正功能进行深入的探讨。

The results shows that the REE of Shuixigou Group came mostly from andesite and granite in the denudation zone,but did not originate from basalt.The pH values of the interlayer oxidation rock zone and the primary reduction rock zone are similar,and those of ore zone are lower than the other two zones.

伊犁盆地南缘乌库尔其地区流体和岩石的 pH值分布情况表明，层间氧化岩石带和原生还原岩石带的 pH值相似，而矿石带的 pH值偏低，这与在偏碱性条件下， REE和 U的络合物容易形成，并且 REE和 U的络合物随着 pH值的降低而迁移和沉淀富集是相吻合的。

Experiments using the down-scaled vehicle prove that the static direct yaw moment control significantly reduces the side slip angle at the center of the gravity Also the experiment results indirectly show that the 2 degree of freedom vehicle model is rather accurate.

仿真实验表明集成控制系统可以使汽车在各种运行情况下质心处侧偏角很小的同时，有效跟踪理想横摆角速度响应。模型小车实验也证明静态横摆力矩控制可有效减小质心处的侧偏角，并间接证明二自由度汽车模型准确性。

I urge any American living outside the country to get an early start checking his/her registration and receiving an absentee ballot, because it can take a while.

我奉劝身在国外的所有美国人早点着手核对登记表，并接收缺席选举人票，因为这得花点时间。

He is too young to join the army.

他太年轻了，还不能参军。