电子管

One of the important requirements on oscillators is to have stable frequency of oscillation.

振荡器的一项重要性能是振荡频率的稳定度，对电子管振荡器的频率稳定性能已有比较长时期的研究。

Fill shell – Feed enters the shell side via lower feed manifold and exit the unit via top backwash discharge valves.

装满外壳–喂食通过的较低的喂食进入外壳边并且歧管通过最高的冲洗卸下电子管退出单元。

Program runs, the screen to draw a circle the school badge, Southeast University, wrote the South East University Tube Plant the text, there are still some of the devices in the operating menu.

详细说明：程序运行时，在屏上画出一个东南大学的圆形校徽，写出&东南大学电子管厂&的文字，还有一些该仪器的操作菜单。

Microwave passive components: Isolators, ring, filters, attenuators, couplers, diplexers, antennas, connectors, etc.

微波元器件：电阻、电容、电子管、集成电路、高频、负载/终端、微带、波导器件、大功率器件、微波/射频电缆组件、同轴连接器、同轴电缆、毫米波器件、射频器件等

It took him four years to build the 6.53m high tower, made of six million matchsticks, 6,240 tiny lamps and 23 flasher lamps

制作这个6.53米高的模型花了他四年时间，600万根火柴，6240个小型电子管和23个闪光转向灯。

In the first decade of the new century, Lee de Forest inserted a grid in the tube between the anode and cathode.

在新世纪的第一个十年，Lee de Forest往电子管的阳极和阴极之间插入一层栅格。

Lee de Forest invents the vacuum tube.

李。德福雷斯特发明电子管。

This phenomenon was called the Edison effect, become electron tube and electronic industries. 1887, from Xiaolan government, and in the same year in a larger city, the laboratory equipment is also updated the famous Edison Laboratory (later known as the invention factory).

这种现象后来称为爱迪生效应，成为电子管和电子工业的基础。1887年，移居西奥兰治，并于同年在该市创建规模更大、装备也更新的实验室，即著名的爱迪生实验室。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。