两分

In chapter 3 of this work, we made some improvement on the base of original work and proposed a double exposure multi-beam interference method to fabricate a hexagonal lattice with irregular columns.

在以前的工作中，我们曾使用衍射分束器件得到三束呈伞状对称的光束相互干涉，制备出了对TE和TM两种模式同时具有较大带隙的二维三角结构光子晶体。

In the double exposure hologram recording process, the sub-surface material placed before the mirrors for micro-wave displacement, then the mirror reflection of the reference beam ...

在两次 曝光全息图的记录过程中，置于物面的分波前反射镜作微位移，则该反射镜反射的参考光。。。

In this dissertation, the optical implementations of integrated bypass-exchange switches and interconnection networks are investigated as the followings:(1) An electro-optic bypass-exchange switch integrated in a single substrate of birefringent crystal is proposed, which is polarization based, and consists of two beam splitters based on the phenomena of double refraction and inner double reflection and in-between an electro-optic modulator based on the electro-optic effect of crystal.

鉴于此，本论文从网络集成包装的角度出发，研究bypass-exchange开关和互连网络的光学实现，主要内容包括：(1)利用单轴晶体的双折射双反射原理和晶体的电光效应，设计了一种新颖的单块晶体集成的电光偏振控制型bypass-exchange光开关，将一个电光偏振控制型bypass-exchange光开关所必需的器件（两个光束分束器和一个电光调制器）集成在一块晶体上。

In order to overcome the difficulties in measuring the flow rate of oil-water two-phase flow, the measurements of total mass flow rate, respective mass flow rate and real density of oil-water mixture with a double-U Coriolis flow meter were investigated.

针对油水两相流流量的测量难题，采用双U型Coriolis流量计对油水混合物的总质量流量、分相质量流量和真实密度进行了测量研究。

The fluctuation characteristics of slug frequency was investigated on the basis of fractal theory for air/water slug flow in a downwardly inclined pipe.

利用非线性分析技术中的分形理论，在长24.73 m、内径0.05 m的小型气液两相流实验装置上对下倾管空气-水段塞流中的液塞频率波动特性进行了研究。

Finally, two short-path distillation processes and one falling film evaporator are applied in the regeneration of waste lubricating oil. In the test, the diesel oil, gasoline and lubricating oil are distilled respectively, while the gelatinoid materials, asphaltene and carbon residue remain in the draft. The regenerative lubricating oil accords with the standards of base oil. And the recovery efficiency is up to 75 percent. The technology used in the test doesnt comprise processes like pickling and alkali neutralization, which would cause secondary pollution like acid draff and sulfur dioxide and so on. As a result of this, our technology is friendly to the environment.

最后，利用一级薄膜蒸发和两级短程蒸馏工艺对废润滑油进行了再生回收工业应用试验，将柴油、汽油等轻油以及润滑油馏分分别蒸馏出来，而大部分胶质、沥青质、碳垢存在于残渣中，试验得到的再生润滑油符合基础油的标准，回收率达到75％，达到废润滑油再生的目的；同时再生过程中没有酸洗、碱中和等工序，不产生酸渣、二氧化硫等二次污染，是一种清洁环保的废润滑油再生工艺。

Therefore, we utilize optical switch to switch over two routes P1 and P2 which are normal feeder fiber P1 and protecting fiber P2. Signal pass P1 and P2 and through 2X2 coupler, splitter, and 2X1 coupler into the drop fiber. Finally pass through WDM coupler and filter into ONU.

传输时利用光开关切换成两路路径P1和P2，分别为在正常下的P1馈线光纤和发生错误时切换成P2保护光纤，再经2X2耦合器、分歧器和2X1耦合器，进入终端光纤，最后经分波多工耦合器和滤波器后进入光网路单元。

Based on stop line way the capacity formula of dual signal control takes the ring road parking capacity into account. Then, the conditions of implementing single or dual signal control from the perspective of capacity are analyzed comparatively.

其中单重信号控制环形交叉口通行能力分无冲突时间和冲突时间两部分进行分析推导，双重信号控制环形交叉口通行能力是在停车线法基础上考虑了环道空间停放能力而进行分析推导的。

Duralumin 2024 has been extruded under different conditions.

试验研究工作分两方面： 1。对Д16 铝合金在不同工艺条件下挤压的棒料进行机械性能试验，结果表明只有在一定温度范围内，制品有挤压效应。

Looking at the photo of eagle ray, notice how it can be 'divided' into 2 parts: top and bottom (part of bottom is visible on left wing of the ray).

纵观鹰射线照片，请注意如何可以'分为两部分：前和底部（底部分是左翼的射线可见）。

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。