电子管

The committee of radio tube design.

电子管设计手册编辑委员会。

There are three parts in this system such as high-power RF Auto-follow circuit, radio tube RF high-handed monofier, and monitor and show circuit.

该系统主要包括大功率射频激励电路、电子管射频高压振荡电路及监控与显示电路3部分。

The characteristic of this paper is that high-power RF Auto-follow circuit is introduced in this system. RF Auto-follow signal produced by high-power RF Auto-follow circuit is provided to radio tube RF high-handed monofier, and it is adjusted reliably using negative feedback to track the running of all of the system.

引入大功率射频激励电路是该系统的一大特色，它产生的射频激励信号提供给电子管射频高压振荡电路，并用负反馈跟踪整个系统运行，调整射频激励信号，使整个系统运行稳定可靠。

Using K2 radio tube mike

使用K2 电子管话筒，使人声更温暖

Out of the electronic tube has come one particularly tough little war baby.

从电子管中产生出一门格外强劲而短暂的战时工业。

Out of the electronic tube has come one particularly tough little war baby.

中间极，二次发射电极一种用于一定电子管作第二次发射电极

Remedy: Clean or exchange valve casing.

1方法：清洁或者更换电子管防护罩

Remedy: Clean valve casing.

1方法：清洁电子管防护罩

The 5021 employs two valve stages per channel, in the form of a Sovtek ECC83/12AX7A twin triode valve run from a stabilised 150V DC supply. One stage is in the preamp, and the other is in the gain control element of the compressor.

5021每通道有2个电子管放大级，使用ECC83/12AX7A双三极管，一级用于前置放大，另一级作为压缩器增益控制，工作在稳定的150V DC电压。

Melting point 3410 ℃, boiling point 560 ℃, relative density of 1935, F the external electronic structure of 5d46s2, in the chemical reaction time is very easy to lose 1-6 electronic, but also can get 1-2 electronic, so oxidation number of 0,± 1,± 2, 3, 4 , 5 and 6, with 6 price of the most stable compounds, such as WO3 does not dissolve in water, the air will form in the tungsten trioxide thin protective layer of tungsten, tungsten with fluorine at room temperature, chemical combination, red hot when there is no moisture and Bromine iodide together, red hot when you can and water reaction WO3, at room temperature reaction of tungsten with aqua regia, but the hot concentrated hydrochloric acid and sulfuric acid can only be played with its weak response, but molten nitrate, nitrite, too Hydrogen peroxide, sulfur steam, steam and other phosphorus can play intense reaction, high temperature can not be carbon, boron and silicon reaction of binary compounds, widely used in industrial tungsten steel and tungsten carbide, pure tungsten filament is used to the system, and X-ray tube Tube heating components, semiconductor components can be prepared tungsten silicide, tungsten industrial production is white or black tungsten ore tungsten ore refining.

熔点3410℃，沸点560℃，相对密度1935，F外围电子结构为5d46s2，在化学反应时很容易丢掉1—6个电子，也能得到1—2个电子，所以氧化数为0、±1、±2、＋3、＋4、＋5和＋6，以＋6价化合物最稳定，如WO3不溶于水，空气中的钨会形成薄层三氧化钨保护层，钨能与氟在室温下化合，红热并无潮气时能与溴、碘化合，红热时还能和水反应生成WO3，室温下钨可与王水反应，但热的浓盐酸和硫酸只能与其起微弱反应，但对熔融的硝酸盐、亚硝酸盐、过氧化氢、硫蒸汽、磷蒸汽等能起激烈反应，高温下不能与碳、硼和硅反应生成二元化合物，工业上广泛使用钨钢和碳化钨，纯钨用来制灯丝、电子管和X射线管的发热元件，硅化钨可制半导体元件，钨工业生产是将白钨矿石或黑钨矿石精炼。

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％。