热离子管

The SI source is an array of microhotplates fabricated by microelectromechanical systems process. Besides as an ionizer, this source acts as an ion grid which can be used to inject ions into the drift region of drift tube periodically.

表面离化源为采用微机电系统工艺加工的微热板阵列，除了作为离子产生器，还作为漂移管的一个离子栅，用以实现离子向漂移区的注入。

Add the clauses of appearance, lixivium ion content and pipe shell eccentricity, improve the thermal conductivity and dimension allowable indexes, add the safe service aphorism, modifies the regulation of inspection and change the "the maximum service temperature" to "temperature for shrinkage under hot load".

增列了外观、浸出液离子含量及管壳偏心度条款，提高了部分板的导热系数及尺寸允差指标，增列安全使用警语，修改了验收规则，并将"最高使用温度"改为"热荷重收缩温度"。

A thermionic tube having three ''.

有三个电极的热离子管。

A thermionic tube having four ''.

有四个电极的热离子管。

A thermionic tube having five ''.

有五个电极的热离子管。

A thermionic tube having two electrodes; used as a rectifier.

有两个电极的热离子管；作用相当于调整器。

A thermionic tube having four electrodes.

有四个电极的热离子管。

A thermionic tube having five electrodes.

有五个电极的热离子管。

A thermionic tube having three electrodes.

有三个电极的热离子管。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。