真空

Aluminum, chromium, or gold are put into a vacuum tank and heated by a tungsten wire.

铝、铬或金放在真空罐内用钨丝加热就一下子变成了蒸气，使整个真空罐充满了金属气体。

ABSTRACT This dissertation is devoted to the theoretical and experimental studies on vacuum arc deposition process.

本论文在全面系统地总结了现有关于真空电弧沉积薄膜研究成果的基础上，针对本领域基础研究不足的现状，选定当前真空电弧沉积薄膜过程中的难题为研。。。

This system which can do correlation analysis among vacuum arc imagine, light intensity spectrum density, electron density, vacuum arc voltage, vacuum arc current has a series of properties like synchronous exposure, high sampling speed, good quality with comparatively low price, strong functional software, friendly user's interface and so on.

本课题研制成功了真空电弧动态图象高速微机采集系统，该系统具有同步曝光、采样速度快，性能价格比高，软件功能强，用户界面好等特点，该系统可对瞬时的真空电弧形态，光强密度，电子密度，电弧电压，电弧电流进行相关分析。

And a relative preparation is characterized in that according to mol ratio (0.8-0.975):(1.8-1.95):(0.010-0.15):(0.010-0.15) to prepare and mix Mg powder, B powder, C nanometer powder, and SiC nanometer powder uniformly to be filled into an iron tube or iron-copper composite tube to be sealed, rotationally forges, draws and rolls to obtain MgB2 superconductive material containing C and SiC nanometer powder, or tablets the raw powder mixed uniformly via a tablet press, to obtain MgB2 superconductive block containing C and SiC nanometer powder, arranges obtained band or block in a vacuum furnace, vacuums and fills argon gas, keeps temperature for 0.2-3h at 600-1200DEG C, and obtains MgB2 superconductive material containing C nanometer powder and SiC nanometer powder.

制备这种MgB 2 超导材料的方法，其特征在于，将Mg粉，B粉，C纳米粉，SiC纳米粉按照摩尔比(0.8-0.975)∶(1.8-1.95)∶(0.010-0.15)∶(0.010-0.15)配制并混合均匀，装入铁管或铁铜复合管中密封后，按顺序先后进行旋锻、拉拔、轧制，得到含C和SiC纳米粉的MgB 2 超导线材；或者将混合均匀的原料粉用压片机进行压片，得到含C和SiC纳米粉的MgB 2 超导块材；将得到的线带材或块材放置真空炉中，抽真空后充入氩气，在600℃-1200℃保温0.2-3小时，最终得到含有C纳米粉和SiC纳米粉的MgB 2 超导材料。

According to the service conditions of users, it can be fitted with vacuum booster pump, and this pump will be used as a prepump.

根据用户使用情况，可配备真空增压泵，将该泵做为前级泵，由增压泵的抽气力加强，前级泵连续抽除，能使您的设备获得更高的真空。

Advanced laser scribing machine, vacuum lamination machine, single solar cell tester, solar cell tester components, vacuum furnace, curing oven, such as more than 50 sets of professional equipment, can be used Epoxy, laminates, encapsulating many ways to carry out the battery plate package, the appearance of fine products, good consistency.

拥有先进的激光划片机，真空层压机、单体太阳能电池测试仪、太阳能电池组件测试仪，真空炉、固化炉等专业设备50多套，可以采用滴胶、层压、灌封多种方式进行电池板封装，产品外观精致、一致性好。

Advanced laser scribing machine, automatic vacuum laminating machine, single solar cell tester, solar cell tester components, vacuum furnace, curing oven, such as more than 20 sets of professional equipment, can be used Epoxy, laminates, potting a variety of ways to carry out the battery plate package, the appearance of fine products, good consistency.

拥有先进的激光划片机，自动真空层压机、单体太阳能电池测试仪、太阳能电池组件测试仪，真空炉、固化炉等专业设备20多套，可以采用滴胶、层压、灌封多种方式进行电池板封装，产品外观精致、一致性好。

SZG Series Double Taper Vacuum Drier is a new generation drying device developed by our factory on the basis of combining the technology of same products. If has two connecting ways, i.e. pulley or chain. Therefore it is stable in operation.

SZG双锥真空乾燥机是我公司在结合国内同类产品技术所开发新一代乾燥装置，&天华&双锥真空具备皮带、链条两级弹性联接方式，因而设备运行平稳。

SZG Series Double Taper Vacuum Drier is a new generation drying device developed by our factory on the basis of combining the technology of same products. If has two connecting ways, i.e. pulley or chain. Therefore it is stable in operation.

SZG双锥真空干燥机是我公司在结合国内同类产品技术所开发新一代干燥装置，&天华&双锥真空具备皮带、链条两级弹性联接方式，因而设备运行平稳。

In this paper the experimental results of laser multiphoton ionization of background gases (mostly oil-vapor) in the vacuum chamber for laser produced plasma study are presented by using high power laser irradiation.

本文报道了在高功率密度激光辐照下，激光等离子体研究用的真空室中背景气体(主要是真空系统中的油蒸气)的多光子电离的实验研究结果。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐