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1)  V-cone
V形内锥
1.
Influence of Key Factors on Discharge Coefficient in V-cone Flowmeter;
V形内锥流量计关键参数对流出系数的影响
2.
Flow Rate Measurement of Gas-Liquid Two-Phase Flow Based on V-Cone Flow Meter;
基于V形内锥流量计的气/液两相流流量测量的研究
2)  V-cone
V型内锥
1.
As new type differential pressure flowrate instrumentation,V-cone flowmeter has been paid extensive attention.
V型内锥流量计是近年来被广泛关注的新型差压式流量测量装置,开展V型内锥流量计在两相流测量中应用的研究,可以拓展其适用范围,为解决两相流测量提供一种新的工具。
2.
In this paper, theories and experimental accomplishment of the fiber optic grating based V-cone flowmeter are presented.
本文介绍了一种新型的V型内锥式光纤光栅流量计的原理以及实现方法。
3.
A soft-measurement method for the mass flow-rate of oil-water two-phase flow in horizontal pipelines was put forward,in which the V-cone differential pressure meter was adopted to acquire the differential pressure of flowing signal.
针对V型内锥测量油水两相流所获取的差压信号,提出了一种水平管道中油水两相流的质量流量软测量方法。
3)  V type internal cone throttling set
V形内锥式节流装置
4)  V type internal cone
"V"型内锥式
1.
This paper introduced the theory analyzing and test researching of the V type internal cone flow transducer applied in locomotive braking system.
对应用于机车制动系统的“V”型内锥式流量传感器进行了理论分析和试验研究。
5)  internal tapered hole
内锥形孔
6)  V-cone flowmeter
V形锥流量计
1.
The utilization of CFD numerical simulation in V-cone flowmeter provides a new method on the estimation and optimization of discharge coefficient.
通过在V形锥流量计中引入CFD数值模拟,为流出系数的计算提供了新途径。
2.
For multi-product pipelines of batch transportation,this paper simulated the fluid flow of V-cone flowmeter in the pipeline flow calculation,analyzed the velocity distribution of the pipeline internal flow,obtained the qualitative relationship between the orifice coefficient of V-cone flowmeter and Reynolds number of mixtures and the skin friction coefficient at the pipeline wall surface.
针对顺序输送的成品油管道,阐述了V形锥流量计在管道混油流量计算中的应用,分析管道内部的速度分布,得到了V形锥流量计的流出系数与混油雷诺数的关系及管道壁面表面摩擦力系数的变化规律。
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。
参考词条