真空

The unit is used to realize the airflow conveying of granulated resin by means of the technology of low vacuum,It can be used with a hopper dryer to automatize dry material-supplying.

本机采用低真空原理实现塑料树脂粒子的气流输送，可与料斗式干燥机配套，实现干燥供料自动化。

Tungsten –Copper alloy is the composite of Tungsten and Copper which own the excellent performances of Tungsten and Copper, such as heat-resistant, ablate-resistant, high-intensity,high-density, excellent thermal and electrical conductivity. It is easy to be machined. It is used widely in such industries as engine, electric power, electron, metallurgy, spaceflight and avigation.

钨铜材料是钨和铜的一种合金，综合了钨和铜的优点，耐高温、耐电弧烧蚀、强度高、比重大、导电、导热性好，易于切削加工，并具有发汗冷却特性，作为真空触头材料、电极材料、电子封装材料以及火箭、导弹特殊用途材料等广泛应用于机械、电力、电子、冶金、航空航天等工业。

In this paper,a study is given to the relationship between vacuum arc current and axial magnetic field keeping the vacuum arc diffuse,a formula of the relationship is deduced.

本文研究了真空电弧与使其保持扩散型的纵向磁场间的关系，并得出了电弧电流与纵向磁场间的关系式。

The improved electrode can produce stronger axil magnetic field and the axial magnetic flux density at contact edge was similar to maximum value.

对铁芯式两极纵磁真空灭弧室触头间隙的纵向磁场和铁芯中涡流进行了数值分析，根据分析结果，对触头结构进行了改进。

Vacuum volatilization; separation process; azeotrope; diffusion coefficient; evaporation heat

真空挥发；分离过程；共沸物；扩散系数；蒸发热

A new method to separate azeotropic mixtures was proposed in the paper, that is, vacuum volatilization separation process. It is undertaken in vacuum and the temperature must be controlled under the azeotropic point to avoid forming of azeotrope.

该过程在真空下操作，控制系统温度低于共沸点，使两组分在分离过程中不形成共沸物，而依靠组分间挥发速度及扩散速度的差异，来突破共沸限制，达到分离目的。

In the 3rd part of this thesis, two attempts to study the surface enhanced infrared spectroscopy of azobenzene acids monolayer on silver island films are discussed.

成功地在通过真空蒸镀的银岛膜基底上获得了偶氮酸LB膜的表面增强红外光谱，同时对偶氮酸LB膜在不同厚度的银岛膜上的表明增强红外光谱性质进行了详细的研究，进而对银岛膜上的表面增强红外光谱的机理进行了研究。

At first, surface enhanced infrared spectra of the azobenzene LB monolayer on silver film of different thickness is studied.

首次发现处于银岛之间的COOH基团经历着比处于银岛之上的COO〓大得多的吸收增强，为了进一步证明该结论，我们通过真空蒸镀、快速热退火等技术构筑了不同粒子大小和粒子分布的增强基底、原子力显微镜的研究结果表明，随着退火温度的提高银颗粒在逐渐增大，相应地银颗粒间的距离也在增加。

ON HIS FIRST day on the job, a vacuum cleaner salesman was assigned to a backwoods area.

在工作的第一天，真空吸尘器的推销员被派到一个非常落后的地区。

And the vacuum pump is needed for all my de-airing and perhaps vacuum bagging needs.

和真空泵是需要我所有的德-广开言路，也许真空套袋的需要。

I am accused of being overreligious," she said in her quiet, frank manner,"but that does not prevent me thinking the children very cruel who obstinately commit such suicide.""

客人们在卡罗利娜·埃凯家里，举止就文雅一些，因为卡罗利娜的母亲治家很严厉。

Designed by French fashion house Herm è s, this elegant uniform was manufactured in our home, Hong Kong, and was the first without a hat.

由著名品牌 Herm è s 设计，这件高贵的制服是香港本土制造，是我们第一套不配帽子的制服。