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- low duty pulsed tube 低工作比的脉冲管
- Call deferentially it " adult " , profess " low duty " . 便恭敬地称它为“大人”,自称“卑职”。
- Thanks to the low duty cycle, you can freely reduce the value of the optocoupler’s load resistor, R8, without sacrificing power efficiency. 由于低占空比,可以不损失功率而任意减少光耦负载电阻R8的值。
- This system makes use of the characteristic of low duty cycle of spot welder to limit the general energized capacity of a spot welder group at any time within a pre-set limit. 本系统利用点焊机负载持续率低的特点,根据预定的限值,对同时通电焊机总容量进行限制,从而稳定了电网电压及焊接电流,保证了点焊机群的焊接质量。
- This paper studies the mechanism of noninvasive impedance measurement technique for CBF.An experimental system excited by current pulses with very low duty cycle is implemented. 本课题研究了脑血流无创伤电阻抗测量技术的原理,采用低占空比脉冲电流激励模式实现了一个脑血流测量试验系统。
- In the preliminary experiments the adiabatic expansion efficiency of orifice pulse tube with low temperature switching valve can be higher than 40%. These results show the application prospects of the machine. 对带低温切换阀的小孔气库型脉冲管的等熵膨胀效率的初步实验结果表明,其等熵效率可达40%25以上,显示了一定的应用前景。
- low duty cycle stable multivibrator 低工作周斯稳态多谐振荡器
- T. Shigi, et al (1996): Anomaly of one stage double-inlet pulse tube refrigerator, ICEC/ICMC 16, Japan, May, 1996. 汤山纯平等(1995),脉管制冷机的制冷性能及制冷温度安定性,第54回1995年度秋季日本低温工学超电导工学学会讲演概要集(日文).
- The newest research direction about pulse tube refrigerator is multi-stage cryocooler driven by valveless compressor. 介绍了国外最新开展的关于脉冲管制冷机的研究方向:无阀压缩机驱动的多级脉冲管制冷机。
- This paper analyzes the inter-phasing pulse tube refrigeration using the thermodynamic methods. 对内调相型脉管制冷机进行热力学理论分析。
- Finally, the cooling temperature of the thermoacousticlly driven pulse tube cooler is deceased from 83.5K to 81.6K with the acoustic amplifier. 最后采用不同长度的声学放大器进行热声驱动脉管制冷机实验,使单级脉管制冷机制冷温度由原来的83.;5K下降到81
- The axial heat conduction losses through the high frequency miniature co-axial nonmetallic pulse tube cryocoolers(PTCs)was analyzed and calculated. 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。
- Regenerator is one of the key components of pulse tube cooler, and its efficiency can greatly influence the performance of pulse tube cooler. 回热器是脉管制冷机的关键部件之一,其效率对脉管制冷机性能有很大影响。
- The phase shift theory and transmission line model of inertance tube in the Stirling type pulse tube cooler were introduced. 摘要介绍了斯特林型脉管制冷机中惯性管调相的原理和惯性管的传输线理论模型,给出了惯性管尺寸的优化计算方法。
- Ray.Radebaugh,Development of the pulse tube refrigerator as an efficiency and reliable cryocooler,Proc.Institute(London) 1999 2000. 边绍雄.;低温制冷机;第二版;机械工业出版社(1991);北京
- The government is trying to keep a low profile on this issue. 政府力图在这个问题上保持低姿态。
- In this paper an experimental investigation on a recently developed two stage double inlet pulse tube refrigerator with a minor orifice is introduced. 介绍最近研制的一台双向进气带第二小孔阀型二级脉管制冷机实验情况。
- The singer forced his low notes. 那位歌手勉强唱出低音。
- In the paper, the high frequency pulse tube coolers (PTCs) developed for 80 K and below temperature application are introduced. 摘要首先介绍了作者开发的可用于80K及以下温区的高频脉冲管制冷机。
- From the phase shift and amplitude adjustment of the flow impedance, the performance of the various pulse tube coolers is theoretically analyzed. 该方法很好地弥补了传统相位理论片面注重各种结构的调相功能而忽略其调幅功能的不足,更好地揭示了它们的作用机理,具有简单、直观的突出优点。