流纹

A lens and a paraboloid nozzle were used to focus pulsed CO2 laser and generate impulse.Effects of single pulse energy on impulse coupling coefficient was studied with a high-accuracy compound pendulum and a light figure system.Extension range of pulse energy from 5 J to 70 J was obtained through adjusting working voltage of the laser and energy attenuation of silicon combinations in the experiment.

利用透镜聚焦，抛物面喷管约束，结合复摆和光指针测量系统研究了单脉冲能量对吸气式激光推进冲量耦合系数的影响，实验中通过调节激光器工作电压和硅片衰减实现了脉冲能量5-70 J范围的有效拓展；进一步采用纳秒分幅高速相机拍摄了24 J能量下的流场纹影照片。

Based on the CAD software UG, the models of centrifugal fans with ruled-surface impeller versus with enveloping surface impeller are developed.

首先本文采用CAD软件UG对直纹面叶轮离心通风机和包络面叶轮离心通风机进行了整体风机三维流场建模和单个叶轮通道的流场建模。

We investigated further the relationship between perfusate 〓 and/or 〓 and ECF glucose and lactate levels.

在探讨灌流高〓与单胺类神经递质关系的基础上，进一步考察了灌流液中高〓和／或低〓的特性对清醒状态大鼠纹状体细胞间液葡萄糖和乳酸的影响。

The inlet internal flow structure was well visu-alized by the schlieren photographs and pressure data.

采用纹影方法，结合压力测量对进气道内流结构进行诊断，同时用Yee的TVD有限差分格式通过求解二维N─S方程对相应实验状态下的进气道内流场进行了数值模拟。

A double-pass schlieren system using a combination of lenses and mirrors was designed for non-intrusive visualization and measurements of large-field flows such as internal waves.

为了实现对内波等流场的大视场无干扰竖向显示测量，设计了一种透镜和反射镜结合使用的平面反射双光程形式的纹影系统。

The model was connected directly to the nozzle exit of shock tunnel as the test section. Schlieren photography was used to visualize the flow flield.

模型发动机作为试验段直接连在激波风洞的喷管出口处，采用纹影照相显示流场。

Although nail trephination with heated paper clip for subungual hematoma is not a new method, yet it was not well known so it should be further emphasized and popularized.

虽然利用烧红的回纹针来做指甲穿洞引流术治疗指甲下血肿并不是一种新的方法，但仍鲜为人知，故它需要加强宣导让更多的人可以好好利用此方法来急救病人。

In our experience, nail trephination with heated paper clip is a simple and effective metohd to relieve pain immediately without any anesthesia, possible infection and nail deformity.

根据我们的经验，利用烧红的回纹针头来做指甲穿洞引流术就可以简单并且有效的在不必任何麻醉下立即解决病患之疼痛，而且可以避免感染或是指甲变形的并发症。

DSA features included: dilatations of brain venule could be seen and the number of brain veins increased; the circulati...

其DSA影像学主要表现为：全脑小静脉扩张、迂曲、数目明显增多；全脑动静脉循环时间延长；丘纹静脉和大脑内静脉系统显影增粗、扩张，并发生深静脉滞流，呈现出"雪花样"表现；静脉窦内对比剂滞留、显影延迟或残缺不全。结论：DSA全脑血管造影是诊断脑静脉系统血栓的可靠方法。

According to the theory of stress-strain relationship of transverse compressive deformation and wood rheological character, it studies the factors about deformation permanent fixation caused by different methods, and analyzes the component change of wood cell wall caused by four physical treatment methods in this experiment. According to the newest research achievements, it is thought that the absolute release of deformation stress and the effective formation of cohesion inside wood are the main reasons of compressive deformation's permanent fixation.

根据木材横纹压缩应力-应变关系、木材流变学特性等理论对木材压缩及变形固定常用方法对形成变形永久固定的主要原因进行了探讨，根据前人对横纹压缩变形的永久固定理论及本实验中使用的四种物理处理方法在处理过程中对木材细胞壁基质物质的变化和表现出的力学特性的影响进行了分析，结合国内外最新研究成果，认为形成木材压缩变形永久固定的主要原因是木材内部变形应力充分释放和内聚力的有效形成。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。