真空的

So, using magnesia and calcia crucible in VIF respectively, the experiments on deep deoxidation by carbon and the phenomenon of oxygen contamination from crucible materials in the molten steel under some temperature and vacuity and oxygen content of the molten steel were made and it were found that properly low melting temperature and vacuity helped to lighten and even avoid oxygen contamination from crucible material and the refining effect of final oxygen content of 5×10-4% in the molten steel was achieved using calcia crucible with better resistance to thermal shock under higher vacuity.

为此，分别采用MgO炉衬与CaO炉衬，在真空感应炉中对钢液用碳进行深脱氧和炉衬供氧现象实验研究，发现：(1)在适当低的熔炼温度和真空度下，可以减轻甚至避免炉衬热分解向钢液供氧；(2)采用热稳定性优越的CaO炉衬，在较高的真空度下可达到钢液最终全氧含量低于5×10-4%的精炼效果。

The device can measure vacuum ultraviolet spectroscopy within a certain range of wavelength simultaneously, and achieve the optical spectrum and pixel resolution of glancing incidence grating vacuum ultraviolet spectrometer, the testing time responses well and the device has high sensitivity; the moveable component is not needed in the vacuum cavity, and the structure is simple and reliable.

本装置有同时测量一定波长范围内真空紫外光谱的能力，并达到掠入射光栅真空紫外光谱仪的光谱和像素分辨率，检测的时间响应好且有很高的灵敏度；真空腔体内无需可移动部件，结构简单可靠。

This is a high degree of water surface to pump impeller center of the vertical distance, it allows a high degree of vacuum suction, can not be confused with manual water pumps or marked on the nameplate on the vacuum suction to allow a high degree refers to pump inlet section on the value of the vacuum, and Is a standard atmospheric pressure, water temperature 20 degrees Celsius circumstances, a pilot and a determination.

这个高度是指水源水面到水泵叶轮中心线的垂直距离，它与允许吸上真空高度不能混为一谈，水泵产品说明书或铭牌上标示的允许吸上真空高度是指水泵进水口断面上的真空值，而且是在1标准大气压下、水温20摄氏度情况下，进行试验而测定得的。

DZQ-600L multi-functional gas-filling packaging machine which has many functions. It can be used for sealing packages only, but also for vacuum packaging or packaging of filling with insert gas after vacuum. It adopts mo case anted double gas, and mechanism has no restriction of big or small vacuum case which has a wide scope of application.

DZQ-600L 多功能真空气调包装机，功能齐全，可用于单一的封口包装，也可用于真空包装或真空后充入惰性气体的包装，采用无室双气嘴机构，不受真空室大小的限制，应用范围极广。

By analyzing the current researches of high voltage vacuum switch,the necessity and feasibility to research and develop 126 kV double-break vacuum circuit breaker are demonstrated,and some countermeasures are presented against the defects of the conventional double-break vacuum switch.

大连理工大学电气工程与应用电子技术系；许继集团有限公司在分析国内外高电压等级真空开关研究的基础上，提出了研发126 kV双断口真空断路器的必要性和可行性，并针对双断口真空开关存在的缺陷提出了解决措施。

The vacuum harrow dryer drying is a commonly used mechanical equipment, as a result of vacuum harrow dryer using heated jacket, vacuum exhaust, almost all of the different nature of the materials are different from state to apply, especially for explosive, easy oxidation, paste of dry materials.

摘 要：真空耙式干燥机是一种常用的干燥机械设备，由于真空耙式干燥机利用夹套加热，真空排气，几乎对所有不同性质、不同状态的物料都适用，特别适用于易爆、易氧化、膏状物料的干燥。

It has been shown that the strength of specimens heat-treated at 1800℃ is higher than that of heat-treated at 1600℃.

结果表明：反应烧结碳化硅中的游离硅在1600℃、1800℃真空热处理过程中已全部去除；经过1800℃真空热处理材料的强度均高于1600℃真空热处理材料的强度。

Vacuum drying oven adopts the digital technical control vacuum degree of simulated engineering science,"control by hand"becomes historicallong age.you return think the today lever operating valve of by hand in 21 century may control vacuum degree accurately?

真空干燥箱采用模拟工程学的数字技术控制真空度，&手动控制&早已成为历史。您还认为在21世纪的今天手动杠杆操作的阀门可以精确控制真空度吗？

The most favorite parameters for processing Yuxiangrousi are that the thickness of material is 5mm, the pressure of sublimation is 140Pa, the pressure of desorption is 30Pa, the temperature of heating board is 20℃ by orthogonal experiments.

通过正交试验得出真空冷冻干燥鱼香肉丝的最佳工艺：鱼香肉丝厚度5mm、升华干燥时真空度140Pa、解析干燥时真空度30Pa、解析时加热板温度20℃，影响工艺的主要因素次序为加热板温度、厚度、升华压力和解析压力；以及复水量在原含水量Aw的140%～150%、复水温度65～85℃、复水时间20～30min最好；最后建立数学模型验证干燥时间。

The advantages of vacuum freeze-drying technology on foods were introduced in this paper.

介绍了食品真空冷冻干燥技术的优点，综述了国内外食品真空冷冻干燥技术的应用状况，对食品真空冷冻干燥技术的发展前景进行了预测。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。