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1)  γ-spectra
GAMMA谱
1.
This paper describes A data acquisition and analysis system for γ-spectra.
本文介绍一种有效的GAMMA谱获取与分析系统。
2)  NaI(Tl) gamma-ray spectrometry
Nal Gamma谱仪
3)  Gamma-Gamma distribution
Gamma-Gamma分布
4)  gamma-gamma model
gamma-gamma模型
1.
This article employs the NBD model to fit purchase frequency and the gamma-gamma model to fit the average monetary value.
本文采用NBD模型来拟合购买次数,用gamma-gamma模型来拟合平均购买金额。
5)  Gamma nail
Gamma钉
1.
Curative effect analysis of treatment of disunion of subtrochanteric fracture of femur by Gamma nail and autogenous bone graft;
Gamma钉内固定及自体植骨治疗股骨转子下骨折不愈合疗效分析
2.
Application of modified Gamma nail in the treatment of the femoral intertrochanteric fractures for aged people;
改良Gamma钉在老年股骨转子间骨折中的应用
3.
The Clinical Study of the Treatment of Intertrochanteric Fractures in the Elderly with DHS,Gamma nail and PFN;
DHS、Gamma钉和PFN治疗老年股骨转子间骨折的临床研究
6)  Gamma nails
Gamma钉
1.
Gamma Nails Versus Dynamic Hip Screws and Plates in Treatment of Intertrochanteric Fractures of the Femur in Adult: A Systematic Review;
Gamma钉与动力髋治疗成人股骨粗隆间骨折的系统评价
2.
Objective To study the treatment effect of intertrochanteric fractures of femur by Gamma nails.
目的探讨Gamma钉治疗股骨粗隆间骨折的手术治疗效果。
3.
【Objective】:To discuss the Gamma nails treat method and efficacy of the femoral intertrochanteric fractures of the aged people.
目的探讨Gamma钉内固定治疗老年患者股骨粗隆间骨折的临床疗效及意义。
补充资料: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
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