vacuum tube

In this subject vacuum tube is used as the switching component in the Class E power amplifier to get higher output power with higher frequency.

本课题的E类功率放大器用电子管作为开关元件，目的是提高放大器的效率和频率，同时获得较大的功率输出。

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。

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

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

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

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。

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

Structure Design of a Vacuum Tube Drying Device

电子管烘干设备结构设计

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

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

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。

John Ambrose Fleming invents the vacuum tube.

1904年的今天,约翰·安布鲁斯·弗莱明发明了真空管.

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

Heavy metal guitar players use vacuum tube amplifiers to produce extreme distortion.

重金属吉他手使用真空管放大器造成严重失音.

Its air consume is less than 1L, while time delay is no more than 1s. Two kind of new vacuum interface valves such as fan-shaped valve and tube clamp valve has been designed, of which the merits are analyzed.

设计制造出一种正压气动隔膜界面阀，取得很好使用效果。该阀耗气量不足1L，延时不到1s。设计了扇形阀和管夹阀两种新型真空界面阀，分析了各自优点。

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

Lee de Forest invents the vacuum tube.

李.德福雷斯特发明电子管.

A specific vacuum tube which converts light into electrical energy.

把光转换成电能的一种真空管.

Hyperloop's all-electric technology--still in its testing phase--uses a sealed capsule inside a vacuum tube, propelled by magnetic levitation.

维珍公司目前仍处于测试阶段的全电超级高铁技术，是在真空管内使用密封胶囊，通过磁悬浮推进。

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

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.

The Al film on Fe reflecting cover surface of solar heating tube has been made by vacuum evaporation deposition.

采用真空蒸发镀膜的方法，在太阳能集热管的铁质金属反光罩的表面，制备了Al反射膜。

The glass vacuum tube doesn't contact water and the whole system should bear pressure.

玻璃真空管不接触水,其整个系统能承受压力.

Vacuum tube amplifiers used the first time in coast-to-coast telco circuits.

真空管放大器首次用于大西洋岸至太平洋岸的电信电路中.

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。

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

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 experimental object is separated by vacuum bottle and mixture of ice and water, for decreasing the heat exchange of ice from environment. The volume variety of ice during melt process is measured by the move-liquid tube, and the melting heat of ice is also measured.

真空保温杯和冰水混合物双重隔离实验对象，降低了冰与环境的热交换，通过移液管测量冰熔化成水的体积变化，进而测定冰的熔化热。

Or to reduce cost, bassoon span of purpose, reduce vacuum tube amount.

或者为了降低成本, 有意增大管间距, 减少真空管数量.

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。