The ancestor of these miniature electronic devices is the vacuum tube. 这些微型电子装置的鼻祖就是真空管。
Based on the numerical simulation, the second law of thermodynamics is applied to analyze the irreversible losses in a miniature pulse tube cryocooler ( PTC) for space application. 利用数值模拟的方法对空间用微型脉冲管制冷机进行了热力学第二定律分析。
Study on the Measurement of the Inside Diameter of the Miniature Metal Halide Lamp's Electric Arc Tube 超小功率金卤灯电弧管泡壳内径测量方法的研究
On the producing process of the miniature metal halide lamp, due to its bulk, the measurement of its dimensions especially the inside diameter of the necks of the electric arc tube is very difficult. 在超小功率金卤灯生产中,由于受其体积限制,各种尺寸尤其是电弧管泡壳两侧缩颈处的内径测量一直是比较困难的。
A numerical model for simulating the oscillating flow characteristics in a high frequency miniature pulse tube refrigerator was developed. 利用数值方法模拟了高频微型同轴脉冲管制冷机内部气流交变流动和换热过程。
The predicted results are useful in designing the coaxial miniature pulse tube cooler for space application. 同时也给出了最佳小孔、双向进气和多路旁通开度下脉冲管制冷机的整机计算结果。
Experimental study of miniature coiled tube evaporator will provide some reference for improving performance of evaporator and constituting suitable design criteria. So, the result has a certain value for theory study and some other field. 微型螺旋管蒸发器的实验研究,能够为改进蒸发器的性能以及制定合适的设计标准提供参考,其研究结果具有一定的理论研究和工程实用价值。
The effect of the regenerator and tube volume on the performance of a high frequency miniature pulse tube refrigerator 蓄冷器和脉冲管尺寸对制冷机性能的影响
In this paper, an experimental investigation on the working characteristics of built-in rotatable spring heat exchanger tube is conducted and applying finite element numerical simulation method the flow field of miniature hydraulic turbine inside heat exchanger tube is analyzed. 本文对内置自旋弹簧换热管工作特性进行了试验研究并应用有限元数值计算方法对换热管内液轮机流场进行了模拟分析。
A miniature low dissipative X ray tube excitation source was developed in this work. 本工作研制了微型低功率X光管激发源。
A miniature acoustic pulse tube introduced in this paper may determine sound-absorption coefficient, sound-reflection coefficient and sound-trasmission coefficient of rubber goods and sample in laboratory. 本文介绍的一种小型声脉冲管装置可以在试验室对橡胶制品和试样的吸声系数,反声系数和透声系数进行测定。
Based on the above mentioned simulation of the miniature thermoacoustic prime mover, a prototype with variable resonance tube lengths was built for experiments to observe its performance, such as onset temperature, oscillation amplitude and operating frequency. 基于模拟结果,建立了微型热声驱动器实验装置,常压下,以空气为工质,着重对起振温度、振幅和频率的影响因素进行了实验研究,并和模拟结果进行了比较分析。
Experimental study for the influencing factors on the lowest refrigerating temperature of the miniature co-axial pulse tube refrigerator has been carried out in this paper. 本文对微型同轴脉管制冷机最低制冷温度的影响因素进行了实验研究。
In order to realize the foul removing/ preventing on line and enhance heat transfer, we have invented the Miniature Hydraulic Turbine in the Heat Exchanger Tube granted by the Patent Office of China. 本技术已获得国家发明专利。我们发明了换热管内微型液轮机用以实现换热设备在线除垢、防垢并强化传热,己获中国专利。
A miniature, low power X ray tube excitation source was developed; 研制了微型低功率X射线管激发源;
Design of the high frequency miniature pulse tube refrigerator 高频微型脉冲管制冷机的设计计算方法研究
Experimental study on the factors influencing the lowest refrigerating temperature of the miniature co-axial pulse tube refrigerator 微型同轴脉管制冷机最低制冷温度影响因素的实验研究
The executive body adopts two separated miniature air cylinders that linked with plastic tube, this purpose is the weight that the systematic device adds on the head of service object ( a baby here) should be within the range that it can be born. 执行机构采用两个分离的微型气缸,两气缸之间用软管连通,此目的在于系统装置加在服务对象(在此为婴儿)头上的重量应在其能够承受的范围之内。
A Miniature Low Dissipative X Ray Tube Excitation Source for Portable XRF Analyzer 适用于轻便型X荧光仪的微型低功率X光管激发源
Manufacture and experimental research of a miniature pulse tube refrigerator 微型脉管制冷机的研制及实验研究
The optimization of the operational parameters and the experimental study with helium-hydrogen mixture on the miniature co-axial pulse tube refrigerator are carried out. 进行了微型同轴脉管制冷机系统运行参数的优化及氢氦混合工质应用的试验研究。
Study on the Working Characteristics of Built-In Rotatable Spring Heat Exchanger Tube and Analysis of the Flow Field of Miniature Hydraulic Turbine Inside Heat Exchanger Tube 内置自旋弹簧换热管工作特性研究及管内液轮机流场分析
Research on long-life experiment of co-axial miniature pulse tube cooler driven by linear compressor 线型压缩机驱动的微型同轴脉冲管制冷机长寿命试验研究
Using Miniature Hydraulic Turbine in Heat Exchanger Tube ( MHT) to realize fouling prevention on-line and enhance heat transfer is a national patent. 用换热管内微型液轮机实现换热设备在线、连续、自动防垢除垢及强化传热是一种实用新型专利技术。
The axial heat conduction losses through the high frequency miniature co-axial nonmetallic pulse tube cryocoolers ( PTCs) was analyzed and calculated. It compares with those through conventional metallic PTCs. 针对所开发的高频微型同轴非金属脉冲管制冷机进行了轴向导热损失的计算与分析,并与相同几何尺寸的金属脉冲管制冷机进行了比较。
Initial Experiments of An Inside-Pumped Miniature Nd: YAG Tube Laser 内泵浦的小型管状Nd:YAG激光器的初步实验研究
Designed and produced miniature X-ray tube, and performance testing. 开展了微型X射线源实物的设计、制作和性能测试。