This paper raises the dynamlc mathematical model for vacuum pressure of condenser during turbine vacuum dropping test, and analyses the relationship between air leakage flow and vacuum dropping speed during test.
本文建立了凝汽器在真空严密性试验工况时排汔压力的动态数学模型，分析了凝汽器真空下降速度与漏入空气量之间的关系，并对真空严密性试验的工作程序提出了修改意见。
Combined with the construction of the pass of Donghai road in Qingdao,the author discusses the comprehensive precipitation technology of the subsurface excavation of the pass of the urban main roads in Binhai district,detailedly introduces the application of the vacuum dewatering technology in the tunnel,to provide the reference for the similar projects.
结合青岛东海路过街道的修建,就滨海区城市主干道修建暗挖过街道的综合降水技术进行了探讨,并对隧道洞内真空降水技术的应用进行了详细介绍,以期为类似工程提供参考借鉴。
In combination with the barged-in fill subgrade treatment project with large area in a certain new town overlooking the harbor in Shanghai City, the paper tests and studies on the problem of strongly ramping consolidated barged-in subgrade with large area by vacuum dewatering with low energy.
结合上海某临港新城大面积吹填土地基处理工程,试验研究了真空降水联合低能量强夯加固大面积吹填土路基问题,对加固过程中及加固后的地下水位变化、超静孔压变化、工艺参数、以及加固机理进行了分析和讨论。
vacuum-operated load reducer
真空下降负荷限制器
Cause Analysis of Vacuum Loss during Operation of Extraction Condensing Turbines and the Remedy
抽凝式汽轮机运行时真空下降的原因及处理
Leakage and outgas of dewar vacuum vessel also is analysed.
杜瓦微漏孔和真空室内部材料放气使杜瓦真空度下降。
The absoluteness of vacuum standard deteriorates with lowering of its pressure.
随着真空度的提高，真空度计量标准的绝对性越来越下降；
While descending to3000 feet, a barge swan shot past smashed the pilot tube( pilot head), air speed indicator out of order.
在下降到3000英尺的过程中，一只大天鹅很快越过，撞坏了空速管。真空速表失效。
Disconnect vacuum hose from vacuum port on the intake manifol
自进气歧管真空口拆下真空软管。
Resin was degassed using a vacuum and the winding carried out under vacuum.
树脂用真空脱气，并在真空下进行缠绕。
Mechanism Studies on VUV-Degradation of N-heterocyclic Organic Compounds;
N-杂环化合物真空紫外降解机理研究
Analysis of the Reasons for Reducing of Insulation Resistance in GIS Vacuum
GIS抽真空时绝缘电阻降低的原因分析
Repast-based Simulation and Modeling of Airborne Battle on Island
基于REPAST的岛屿空降作战仿真模型
Introducing Vacuum Negative-pressure Technique and Reducing Coal Dust Problem in Fully Mechanized Caving Face
引进真空负压技术 降低综放面煤尘
Degradation of unsymmetrical dimethylhydrazine by O_3/VUV
真空紫外光臭氧降解偏二甲肼的研究
"Substantial Space" and "Conceptual Space" as Regards Decrease in Fertility Rate
生育水平下降的“实在空间”与“观念空间”
The statement should be qualified and should specify that all bodies fall at the same rate in a vacuum.
这个论述应加以限定，并修正如下：所有物体在真空中以相同速度降落。
At the appropriate pressure, the chamber is opened to a high-vacuum pumping system that continues to reduce the pressure of the process chamber.
在适当的压强下，工艺室被接通高真空泵系统抽气，以继续降低工艺室的压强。
The maximum operating temperature should be reduced for non-air applications with the exception of argon and helium that can be used without any reduction.
在真空条件下，应该相应降低最大操作温度，氩气、氦气等惰性气体条件除外。
true airspeed under standard condition
标准情况下的真空速
downdraft constant - vacuum carburettor
下吸式恒真空度化油器
