内腔

The results show that:(1) The space-charge fields(include dc space-charge fields and ac space-charge fields) have important effect on the beam-wave interaction output power, make the saturated output power lower, saturated position delay;(2) The back-radio excited by the electron beam has little effect on the output power, and can be ignored;(3) The transverse motions of electron beam has some effect of the output power;(4) The means of phase velocity taped and bunch compression can improve the relativistic TWT efficiency, especially bunch compression can greatly improve the efficiency.

五、分析了相对论行波管三维非线性特性，分析结果表明：(1)空间电荷场（包含直流和交流空间电荷场）对注波互作用输出功率影响很大，会造成饱和输出功率减小，饱和位置推后；(2)电子注激发的反向辐射对输出功率影响比较小，基本上可以忽略不计；(3)电子注横向运行对注波互作用的直接影响比较大；(4)通过改变耦合腔内半径来调节慢波结构相速，采用相速跳变和预群聚的方法可以改善相对论行波管的效率，特别是采用预群聚方法，可以尽量提高相对论行波管的效率。

The external diameter of a quartz liner is determined to be 36-46mm, the inner diameter to be 32-40mm and the length of the liner to be 1.45-1.85m for the process of PCVD. Parameters of a processing technology are that the high frequency power of a microwave resonator is controlled to be 6KW-15KW and the deposition temperature is 1080-1130 degree Celsius. The variety of mixed air flowing through the liner includes silicon tetrachloride vapor, germanium tetrachloride vapor, high-purity oxygen and Freon. The inside pressure of the liner is 10-15millibar. The air flow rate inside the liner is

取石英衬管的外径为36～46毫米、内径32～40毫米，衬管长度1.45～1.85米，进行PCVD加工；加工工艺的参数为：微波谐振腔的高频功率控制在6KW～15KW，沉积温度1080℃～1130℃，流经衬管管内混合气体的种类：四氯化硅蒸气、四氯化锗蒸气、高纯氧气、氟里昂，衬管的管内压力为10-15毫巴，管内气体流速为30-80米/秒，气体体积流量为4400SCCM-8800SCCM。

The opposite hydraulic pressure tension is a sheet forming method,using the reverse hydraulic pressure established during the raised mold and sheet enters the concave mold.

对向液压拉深是在凹模兼液压室的型腔内充满液体，利用凸模带动板料进入凹模后建立的反向液压而使板料成形的方法。

Before the motor is in overhaul status confirmed; screw under the plug come on, put to use straw sealed cavity lubricants Block aspiration.

2拆前确认电机处于检修状态；拧下加油螺塞，用吸管把密封座腔内的润滑油吸出。

Partially end-pumped slab laser using hybrid resonator is a favourable concept to scale high power with high beam quality in compact dimension.

部分端面抽运混合腔板条激光器可以在紧凑的空间内实现大功率高光束质量的激光输出。

It is because through the apertures the exterior electromagnetic field will couple with the cavity, and excite resonance in the cavity.

甚至在空腔中特定位置有著比无屏蔽时更大的场，对於封装内的电路构成额外的干扰。

If there's no front kick drum head, position the mic inside the bass drum about a foot back from the point where the beater hits.

如果底鼓前面没有鼓皮，那么就把麦克固定在鼓腔内距踩锤击打位置1英尺的位置。

Y 6 p, J! H7 p; P -If there's no front kick drum head, position the mic inside the bass drum about a foot back from the point where the beater hits.

如果底鼓前面没有鼓皮，那么就把麦克固定在鼓腔内距踩锤击打位置1英尺的位置。

H1N1 takes 2-3 days after initial infection in the throat/ nasal cavity to proliferate and show character is tic sym pt oms.

H1N1在鼻喉腔内经过2-3天，才开始增生并出现症候，简单的盐水漱可以抑制病毒繁衍，等于是健康人的流感疫苗，千万不要小看这看似简单、花费不多，但是很有效的办法。

Gargle twice a day with warm salt water (use Listerine if you don't trust salt). H1N1 takes 2-3 days after initial infection in the throat/nasal cavity to proliferate and show characteristic sym pt oms. Simple gargling prevents proliferation. In a way, gargling with salt water has the same effect on a healthy individual that Tamiflu has on an infected one.

每天用温盐水（或李斯德林漱口水，如果你不太相信盐水有效的话）漱口两次。H1N1在鼻喉腔内经过2-3天，才开始增生并出现症候，简单的盐水漱口可以抑制病毒繁衍，等于是健康人的流感疫苗，千万不要小看这看似简单、花费不多，但是很有效的办法。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。