1) heavy gas
重气
1.
On how to choose the turbulence models of heavy gas dispersion for hill-shaped terrains;
山地地形重气扩散模拟中湍流模型的选择
2.
By use of standard turbulence model in Fluent software of CFD(computational fluid dynamics),heavy gas dispersion experiments on instantaneous and continuous leakage are simulated to predict the variation of parameters.
运用CFD软件Fluent中的标准双方程湍流模型,对重气瞬时和连续泄漏的扩散进行了模拟以预测重气扩散过程中参数的变化,结果表明重气在垂直高度上的浓度随高度增加而减小,对于重气到达一点处的时间而言,瞬时泄漏的预测时间小于实际到达时间,而且浓度减小到零的时间也要先于实际的时间,连续泄漏的情形则相反,模拟过程假设风速和风向不变导致模拟结果没有实际的波动大。
3.
The paper gives a general idea about the causes for the formation of heavy gas and the factors influencing its dispersion.
在分析重气形成原因的基础上,对影响重气扩散的因素进行了分析;对目前国外进行的大型重气扩散实验进行了简单的描述,在实验的基础上,对开发的重气扩散模型做了介绍,并对各类模型的优缺点以及基本原理进行了概括;最后提出重气扩散的研究方向。
2) dense gas
重气
1.
This paper introduces the investigation of the characteristic features of the dense gas plume and the influence of walls and trees on dense gas plume dispersion by using the wind tunnels, in which the plume was created by a small circular source at ground level.
介绍利用风洞研究重气烟羽扩散特征以及围墙和树对其影响。
2.
About 90%casualties caused by toxicant leakage are related to dense gas leakage.
目的:在因毒物泄漏造成的人员伤亡中,约有90%与重气泄漏有关。
3.
The mathematical physics models could be put forward to reflect the physical phenomenon in the air turbulent flow and dispersion with dense gases,where topography change or obstacles exists.
针对高原山区地形条件下城市重气泄漏流动和扩散的特点,提出了合适的数学物理模型。
3) air-dense medium
空气重介
1.
Coal dry beneficiation with air-dense medium fluidized bed(ADMFB) is a nonlinear,and multivariable coupling system.
针对空气重介流化床干法分选系统具有多变量、非线性、强耦合和参数不确定性的特点,提出了两级串联结构的自适应模糊神经网络解耦控制策略,前级为基于连续性智能权函数规则的自调整模糊控制器,后级为基于动态耦合特性的自适应神经元解耦控制器。
2.
This paper mainly discusses the contribution and the characteristics of mediumdraining screen in the air-dense medium separation system.
本文简要论述了干法脱介筛在空气重介干法分选工艺系统中的作用及特点；阐明了干法脱介筛的工作原理及结构特点；说明其主要参数选取的依据及方法。
3.
Principle and problems existing in use about 2ZQB2030 medium draining screen,the matching equipment of dry coal cleaning by use of air-dense medium fluidized bed was introduced.
介绍空气重介流化床干法选煤的配套设备2ZQB2030干法脱介筛的工作原理,分析运用中存在的问题,针对存在的问题提出了相应的改进措施。
4) heavy gas dispersion
重气扩散
1.
The feasibility to simulate the accidental leaked heavy gas dispersion in atmosphere by salt water experimental method is analyzed according to the similarity theory.
采用缩比模型的盐水模拟实验,对重气在大气中的扩散速度及浓度变化进行了分析,证实了重气扩散过程中的重力沉降、密度分层以及近源区分叉等现象。
2.
The forward finite difference and Newton iterance are used in the light of box model and other heavy gas dispersion models, such as IIT Heavy Gas Models and virtual point source model, to solve the differential equations of controlling heavy gas cl.
文中从控制重气云团扩散行为的微分方程入手 ,根据箱模型(boxmodel)及其他一些重气扩散模型 ,如IITHeavyGasModels模型和虚点源模型 ,采用向前插分和牛顿迭代的方法 ,针对ThorneyIslandTrialNo 。
3.
A Virtue Instrument(Ⅵ)on the heavy gas dispersion was designed and constructed based on the forming causes, the physical properties and the dispersion processes of varies heavy gases,by utilizing the developed data bases,or the numeric controllers written on theⅥinterface manually for the characteristic parameters.
本研究设计构建的重气扩散虚拟仪器,针对不同重气成因、物理属性和扩散过程,通过调用成果数据库或在用户界面控件上手动写入来设置特征参数。
5) Heavy gas effect
重气效应
6) pneumatic counterbalance
气动配重
1.
A pneumatic counterbalance method for a super-precise vertical motion stage is adopted for decreasing the drive force and increasing the motion precision of a motor.
建立了重物配重及气动配重的力学模型,指出重物配重时,电机的推力至少要能够克服摩擦力,而用气动配重方法,当平台运动方向发生变化时,改变气缸压力,使平台在垂直运动时所需的电机推力小,甚至达到零负载,使其运动精度得以提高。
补充资料：重气
1.重视义气;崇尚气节。 2.谓重视文章气势。 3.谓气郁结阻塞。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条