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1)  d ratio
d比值
1.
The article defines the hedge fund managers skill with d ratio and judges the stability of the manager s skill by analysing the income trend of hedge fund with Hurst indices.
d比值定义对冲基金经理的技能 ,并使用赫斯特指数通过对对冲基金收益的趋势分析 ,能帮助判断经理技能的稳定性。
2)  S/D ratio
S/D比值
1.
The determination of umbilical artery S/D ratio with Doppler bloodflow monitor in high risk pregnancy(HRP) is an effectice method to evaluating fetal condition with simple operation and harmless to fetal,and has been used widely in monitoring the HRP in gynaecology.
多普勒超声脐血流S/D比值测定具有操作方便、对胎儿无损害等特点,是估价胎儿情况的一种有效方法,在产科高危妊娠的监测中应用广泛。
3)  eyesight [英]['aɪsaɪt]  [美]['aɪ'saɪt]
C/D比值
1.
The study of the correlation of eyesight,intraocular pressure and C/D ratio in simple myopia in children and teenagers;
青少年近视患者视力与眼压及C/D比值的相关性研究
4)  Velocity/diameter (V/D)
流速与内径比值(V/D)
5)  d/D rate
d/D值
1.
Based on the RTD (Residence Time Distribution) experiment and in-tandem model, this paper mainly discussed how the d/D rate and the rotating velocity of fluid director (n) influenced the flow pattern of SUFR.
介绍了螺旋升流反应器流态试验的思路及原理;并通过寿命停留时间分布(RTD)试验及多段串联模型,探索d/D值及导流转速(n)对螺旋升流反应器的流态的影响规律;由正交回归试验得到:当d/D=0。
6)  D-value
D值
1.
By this method, the D-values of three foodborne pathergens, Escherichia coli , Salmonella paratyphi B at the temperature of 50 ,55,60 ℃ and Staphylococcus aureus ranges from 55~65 ℃ in water bath and microwave heating were determined.
利用此方法,分别测定了三种食源性致病菌,大肠杆菌(Escherichia coli)、乙型副伤寒沙门菌(Salmonella paratyphi B)在50,55,60℃水浴和微波加热杀菌的D值,以及金黄色葡萄球菌(Staphylococcus aureus)在55,60,65℃水浴和微波加热杀菌的D值。
2.
We use D-value method to fast determine the efficacy.
本文研究了绿茶和桑叶提取物在不同浓度时对细菌的抑制作用,采用D值计算法快速评价了它们的抑菌效果。
3.
By comparing the D-value of both microorganisms,it is found that Escherichia coli are killed more easily than staphylococcus aurous.
通过对灭菌D值的比较发现大肠杆菌(革兰氏阴性菌)较之金黄色葡萄球菌(革兰氏阳性菌)易于灭杀。
补充资料:pH指示剂吸光度比值测定法
分子式:
CAS号:

性质:采用容量法与分光光度法相结合的一种差示定量法。其原理为选择一种适当的酸碱指示剂,其酸式色和碱式色的吸收光谱和吸收度有显著的差别,且该指示剂的pKa值在某一酸碱反应的化学计量点的pH值附近,当酸碱滴定时,在酸式色和碱式色的最大吸收波长λ1和λ2处分别测得其吸收度Aλ1及Aλ2,计算吸收度比值r′(r= ),便可通过滴定中r的变化而准确测 定样品含量。该法除用于弱碱性药物的测定外,还可用于磺胺类、氨基酸等的测定。JP(9)已收载用于水杨酸钠、枸橼酸钠、氨基比林、无味奎宁、烟酰胺等药物的测定,《中国药典》(1985)也已收载用于枸橼酸钠的测定。

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