真空

The invention is mounted at the bottom of glass vacuum heat collecting tube chamber, relative to the elastic metal support clamper.

真空集热管导热保温器安装于全玻璃真空集热管腔的底部，其器身与弹性金属支撑卡对应。

The use of active filler metal(Ag70-Cu28-Ti2) in the vacuum braze welding is tested with AlN.

研究了在真空条件下AlN陶瓷真空活性封接的情况，使用的活性焊料是Ag70-Cu28-Ti2熔炼焊片。

Used in shaping process of brick production , the treated clay will be plastic extruded by up stage then via vacuum room into down stage, estruding into solid or hollow clay column of required cross section and shape which then cut into greenbrecks by green breck cutter.

JKR40/40型双级真空挤砖机适用于砖瓦生产成型工段，可将经过处理的原料经过上级增塑挤出后落入真空室抽取空气后再经过下级挤成规定断面的实心或空心坯条，再经过切坯机制成一定规格的砖坯。

The new method presented in this paper, a modified non-vacuum Bridgeman method, is suitable for growing lead fluoride crystals with large size and excellent quality.

文章介绍的掺脱氧剂非真空生长新技术既摆脱了真空法中设备投资大和工艺复杂的缺点，而且生长出的晶体性能优越，其透光率、吸收边、透光均匀性、能量分辨率和抗辐照损伤能力均可满足实用要求，处于世界领先水平。

Companies rely on advanced quality management system, strong technology development strength - in constant demand by customers for the purpose of focus, the commitment to the development of China's vacuum valve creatively continuously reliable performance, beautiful appearance of the products, have in hand , gas, electric butterfly valve, valve, damper valve, electromagnetic valve differential pressure, electromagnetic valve, ball valve, valve plates, etc. more than 10 series vacuum valves, as well as various specifications and models of high school low-pressure valve and hydraulic control valves.

公司依靠先进的质量管理体系，雄厚的技术开发力量—在不断地以顾客需求为关注焦点的宗旨下，致力于我国真空阀门的发展，创造性地不断推出性能可靠，外形美观的产品，有手，气、电动的蝶阀、隔膜阀、挡板阀、电磁压差阀、电磁截止阀、球阀、插板阀等10多个系列真空阀门，以及各种规格和型号的高中低压阀门和水力控制阀门。

The result shows that the main factors,which affect the technical quality of the cathode assembly preparation,are surface oxidization of emissive layer,impurity pollution,doped concentration nonuniform,less variation of doped concentration gradient,the sticking stress of GaAs and glass,and the main factors,which affect the cathode activation,are the degree of vacuum for activation at lower than 8x10-8Pa,the partial pressure of H2O,CO,CO2 and C in the vacuum residial gas at higher than 10-8 Pa and the improper caesium and oxygen refining.

结果表明，影响台外工艺质量的主要因素是外延材料缺陷多、发射层表面氧化、杂质污染、掺杂浓度不均匀、掺杂浓度陡度变化小及GaAs与玻璃粘接产生的应力大；影响台内工艺质量的主要因素为阴极激活真空度低于8×10-8Pa。真空残气H2O.CO.CO2及C分压大于10-8Pa。阴极激活铯和氧源提纯不彻底。

Reducing afterblowing and using the carburant with low nitrogen content are important measure. The kinetics of nitrogen removal from liquid steel under vacuum with reaction between carbon and oxygen was studied on the multi-function induction furnace. The following conclusions were obtained by experiments: The nitrogen removal was obtained by the nitrogen transfer through the liquid steel diffusion layer at 67Pa and 110Pa pressure, and by the gas-liquid surface chemical reaction at 2000P.

结果表明：真空度对脱氮机理有影响，67Pa～110Pa时脱氮为一级反应，2000Pa时脱氮为二级反应，1340Pa时为混合控制；即使在。1％的条件下，碳氧反应亦可显著提高脱氮速度常数促进深脱氮，在RH内通过加强碳氧反应来提高脱氮率理论上是可行的；当钢液内存在内生或外来固态粒子时，有利于钢液中CO及N〓气泡的形成及排除，这时气泡内p〓≈0，有可能使钢液中氮含量低干与系统真空度平衡的氮含量。

This paper establishes a physical modle of carburettor vacuum when an engine is in cold condition and low revolutions, In cold cranking state and idle motion state a calculation about the changes of carburettor vacuum at the back of air choke and throttle valve is finished.

本文建立了在发动机冷车低速时化油器真空度的物理模型，计算了冷起动工况和怠速工况下阻风门与节气门后的真空度变化情况。

In this paper,the effect of dry time,power,rotate speed,vacuum degree and thickness on drying rate was studied in the drying of chayote .

考察了佛手瓜真空微波干燥过程中，干燥时间、微波功率、真空度、转速、厚度等因素对干燥率的影响，用BP神经网络建立了干燥率与这些因素的关系模型，并应用MATLAB神经网络工具箱实现对该模型参数的训练和系统模拟。

The model of the relationship between the effect of microwave vacuum drying of chayote and these dry factors was established by the BP neural networks method.

考察了佛手瓜真空微波干燥过程中，干燥时间、微波功率、真空度、转速、厚度等因素对干燥率的影响，用BP神经网络建立了干燥率与这些因素的关系模型，并应用MATLAB神经网络工具箱实现对该模型参数的训练和系统模拟。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。