vacuum tube

China is now capable of building the world 's first underwater vacuum tube train , a futuristic form of transportation that can achieve supersonic speed and reduce airborne noise , according to Chinese academics and scholars .

据中国的学者和学术研究人员表示，中国现在有能力建设世界上第一条水下真空管列车--这种未来的交通方式，其速度可以超过音速、且能大幅度降低噪音。

Determination of life of a vacuum tube by contact resistance

用真空管触头接触电阻判断其电寿命

A New Calculation Method for the Vacuum Tube High Frequency Power Amplifier

电子管高频功率放大器的新算法

Design of Production Process for Exhaust of Vacuum Tube Based on Expert System and Fuzzy Control

基于专家模糊控制的真空管生产工艺的设计

Structure Design of a Vacuum Tube Drying Device

电子管烘干设备结构设计

A specific vacuum tube which converts light into electrical energy .

把光转换成电能的一种真空管。

Battery used to maintain the grid potential in a vacuum tube .

能够保持潜藏在真空管内的栅格的电池。

Thermal Performance of Vacuum Tube Solar Water Heater in Winter

真空管太阳能热水器冬季热性能研究

I think this was a vacuum tube system where there is no drag .

我认为这是一个真空集热管系统，其中有没有阻力。

Battery used to heat the filaments of a vacuum tube .

能够把真空管的细丝加热的电池。

The Impact of the Dust on the Solar Vacuum Tube Collector Performance

灰尘对太阳能真空集热管性能的影响

Performance Analysis on Solar Adsorption Refrigeration Using Vacuum Tube Adsorber

采用真空管太阳能吸附集热器的制冷系统性能分析

Discussion of deflation technology for vacuum tube of liquid hydrogen and liquid oxygen

液氢、液氧真空管路抽空技术探讨

Forecast of the Thermal Efficiency of Vacuum Tube Solar Heaters Based Fuzzy Neural Network

模糊人工神经网络在真空管太阳能热水器热效率预测中的应用

Thermal efficiency is an important parameter for the design of vacuum tube solar heater .

热效率是设计真空管太阳能热水器时的重要参数。

The experimental research of the vacuum tube water heater with supplant tube

带排挤管的真空管太阳能热水器实验研究

Economic Evaluation of the Whole Glass Vacuum Tube Solar Water Heater in Zhengzhou Area

郑州地区全玻璃真空管太阳能热水器的综合评价

Relationship between Internal Pressure of Vacuum Tube and Ionic Current of Magnetron Discharge

真空灭弧室内气体压强与离子电流的关系

The new coating is suitable to be used on low concentrate vacuum tube collectors .

该涂层适用于低倍聚光真空管集热器。

The evaluation and comparison of the thermal performance between two kinds of vacuum tube solar water heater

两种真空管太阳热水器热性能的评价

Design of High Fidelity Headphone Amplifier Based on Vacuum Tube WCF Circuit

基于电子管WCF电路的高保真耳机放大器设计

Main differences between transistor converters and vacuum tube converters are compared .

比较晶体管变频器与电子管变频器的主要区别。

A computer utilizing vacuum tube components .

一种使用真空管器件的计算机。

The experimental results show : the instantaneous efficiency of vacuum tube collector is concave ;

实验结果表明：真空管集热器瞬时效率呈凹形；

The improved design , proper installation and rational application of the vacuum tube type of solar water heater

真空管式太阳热水器的正确安装、使用及改进设计

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。

Shockley , it displaced the vacuum tube in many applications .

晶体管在许多用途上已取代了真空管。

Battery for supplying a constant positive voltage to the plate of a vacuum tube .

能够产生真空管金属板稳定负电压的电池。

They couldn 't shrink the vacuum tube any more and keep the vacuum .

他们再也无法缩小真空管，并使它保持真空。

A Simple and Yet Effective Method for Prolonging the Service Life of FU-113 Vacuum Tube

一种延长FU-113管子寿命的简单而有效的方法