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1)  inside flow work condition
内流工况
1.
In the paper, based on reading and studying a great number of references about fluid dynamic technique and numerical computing methods of flow field, 3-D Numerical simulations and visual analysis of the flow field in hydraulic poppet valve with inside flow work condition were obtained by CFD (Computational Fluid Dynamics) software Fluent.
本文在参阅大量国内外有关计算流体力学和流场数值计算方法相关资料的基础上,用CFD(Computational Fluid Dynamics)软件Fluent对内流工况液压锥阀内部流场进行了三维数值模拟及可视化分析。
2)  combustion dynamic
炉内工况
1.
This article conducts a analysis about the influence of furnace combustion dynamic caused by the tertiary air come from the pulverized coal system of the boiler imported from former USSR ЕП-670-13.
8/ 5 4 5KT型锅炉制粉系统三次风对炉内工况的影响进行了分析 ,提出了解决问题的方法。
3)  overflow conditions
超流工况
1.
In the variable conditions calculation of thermodynamic calculation for marine steam turbine,it is often for overcritical conditions and overflow conditions to occur.
在船用汽轮机热力计算的变工况计算中,经常出现超临界工况及超流工况。
4)  overflow condition
溢流工况
1.
Based on actual observational data and model tests of downstream slope protection stability for overflow cofferdam, the energy coversion relation of the cofferdam overflow condition is brought out with hydraulic theory of dam engineering and theory of boundary layer, and then a dicriminant for overflow condition is put forward with the condition of slope protection stability.
在过水围堰下游护坡稳定的实际观测资料和模型试验的研究基础上,应用水力学能量方程和边界层理论,提出了土石过水围堰过水时的能量转换关系;运用护坡稳定性条件,提出了溢流工况的判别式。
5)  discharge condition
泄流工况
6)  procedure of operating mode
工况流程
补充资料:-戊内酯、3-甲基丁内酯、咖吗-戊内酯
CAS: 108-29-2
分子式: C5H8O2
分子质量: 100.12
沸点: 207-208℃
熔点: -31-208℃

中文名称: 4-戊内酯、γ-戊内酯、3-甲基丁内酯、咖吗-戊内酯

英文名称: dihydro-5-methyl-2(3H)-Furanone、dihydro-5-methyl-2(3h)-furanon、4-hydroxypentanoic acid lactone、4-hydroxyvaleric acid lactone、4-methyl-gamma-butyrolactone、gamma-methyl-gamma-butyrolactone、gamma-valerolakton

性质描述: 无色至微黄色液体。凝固点-31℃,沸点205-206.5℃,83-84℃(1.73kPa),相对密度(25/25℃)1.0578,折光率(nD25)1.4301。能与水、许多有机溶剂、树脂和蜡等混溶。10%水溶液的pH为4.2。

生产方法: 由不饱和羧酸通过闭环反应来合成,例如乙酰乙酸与硫酸共热,或乙酰丙酸在镍、铜等催化剂存在下加氢。

用途: γ-戊内酯有较强的反应能力,可用作树脂溶剂及各种有关化合物的中间体。也用作润滑剂、增塑剂、非离子型表面活性剂的胶凝剂、加铅汽油的内酯类添加剂,用于纤维素酯和合成纤维的染色。γ-戊内酯具有香兰素和椰子香味。我国GB2760-86规定为允许使用的食用香料。主要用以配制桃、椰子、香草等型香精。
说明:补充资料仅用于学习参考,请勿用于其它任何用途。
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