查询词典 convection current

Dewar is an important component of the astronomical observation.CCD should be cooled to low temperature by Dewar,because of the noise and dark current.

杜瓦瓶是天文观测中重要的终端设备部件，对降低探测器的暗流和噪声有不可替代的作用，被广泛用于冷却各种探测器。

A WPKI architecture based on the user-defined wireless protocol is researched and discussed, and concretely designed according to the current network condition of DHU.

本文研究了基于自定义无线网络协议的固定无线接入网络的WPKI方案，对符合东华大学现有网络条件的无线数据采集系统的WPKI体系架构进行了研究、讨论与具体设计。

Then the history of development of data acquisition and processing system of target diagnostication in ICF experiments and the current status of ICCS has been introduced briefly.

接着简要介绍了ICF实验靶物理诊断系统中的数据采集和处理系统发展过程及ICCS系统最新发展现状。

In the proposed method the data from state estimation or power flows during larger time interval is used to calculate nodal voltages and the initial value of current transitive-relationship matrix; the variation of diagonal elements of this matrix reflects the variations of the detailed models of system components, network topology and parameters after the perturbation, then by use of the PMU measured data in millisecond level the primary diagonal element can be modified.

该方法采用时间间隔较大的状态估计或潮流数据计算节点电压和电流传递关系矩阵的初值，并利用该矩阵主对角元的变化反映受扰后系统各元件的详细模型、网络拓扑和参数的改变，然后使用相量测量单元毫秒级的量测数据对其进行修正，从而为在实际应用中将相量测量单元与SCADA系统相结合做出了有益探索。

The error source of CMM is complex, and the current main research is its geometric error. In the paper, 21 items of geometric error are measured accurately, simply and fast with the 2-D laser interferometer and four quadrants photo detector. The measurement gets rid of measuring so many lines and several diagonal lines in linear displacement method, and also solves the question that error measure of large-scale CMM can not be measured with 1-D ball array and ball plate conveniently.

坐标测量机的误差源纷繁复杂，当前主要研究的是其几何误差，课题中研究了一种采用二维激光干涉仪和四象限光电探测器相结合的测量方法，对三坐标测量机的21项几何误差进行了准确、简便、快速的测量，摆脱了线位移法测量直线过多且包含多条对角线测量的弊端，同时也解决了一维球列和球板不方便检测的大型测量机的误差检测问题。

We describe the procedure of calculation of mesoscopic persistent current by Green function and diagrammatic analysis methods.

这组文章构成一个整体，本意给这个领域的研究生一定的入门知识和基础。

Therefore, the diamagnetic current is a second-order effect although it is still significant.

虽然它仍然是重要的，因此，反磁性的涌流是第二次序的效果。

The results show that the current method is more effective than literature methods for estimating the molar diamagnetic susceptibility of an inorganic compound.

结果表明本文的方法在预测无机物反磁磁化率方面比文献方法更有效。

To avoid the complex process and high cost in the current fabrication technique of carbon nanotube display,a 125 μm diametric quartz-glass was fabricated by heating optical fibre to decoat in a sintering furnace and cutting it to 30 mm and 50 mm long.

针对现有的碳纳米管场发射显示器制造技术中存在的工艺复杂、成本过高的问题，利用通信光纤，通过烧结炉热处理的方法制作出了一种直径为125μm的石英玻璃光纤支撑墙，并将其切为30mm、50mm2种长度。

If she continues drawing on the reserve at the current rate, she will run out of funds by 2012 – the year of her diamond jubilee.

如果她继续按目前的速度提取储备金的话，她将在2012年——她的钻石婚纪念那年——用完储备基金。

Listen,point and check your answers.

听，指出并且检查你的答案。

Warming needle is one of effective treatment methods for knee arthralgia aggravated by cold,and it is simple,safety,so it should be developed in clinical acupuncture and moxibustion extensively.

但以本院科针灸门诊在2005年1月—2006年6月期间共收治膝痛患者100余例，经过临床的诊断后，其中施以温针治疗的48例，疗效显著，报道如下。1临床资料本组病例48