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1)  fire spread ratio
火焰传播比值
2)  flame propagation
火焰传播
1.
The characteristics of flame propagationduring explosion venting from cylindrical vessel;
柱形容器开口泄爆过程中的火焰传播特性
2.
Investigation on Gas Thermodynamic Characteristics and Flame Propagation in Combustion Chamber Crevice by Means of Laser Interferometry and Schlieren Photograph;
利用激光干涉法和纹影摄影法进行燃烧室间隙内火焰传播与气体热力学性能的研究
3.
Firedamp flame propagation rules under obstacles are researched during the gas explosion process.
该文对存在障碍物的瓦斯爆炸过程中的火焰传播规律进行了研究,结果表明:障碍物对火焰的传播速度具有重要影响。
3)  flame spread
火焰传播
1.
Recommendation on assessing flame spreading of materials using ISO 9705;
关于用ISO 9705评价材料的火焰传播(英文)
2.
With the increase of the forced convection flow, convection becomes the main mode of mass transfer, and the chemical reaction is controlled by the chemical kinetics, the flame spread is not sensitive to the change of pressure.
研究表明,在微重力环境中,当强制对流速度很小时,环境压力的增大会加强氧气的扩散,减弱辐射热损失对火焰的冷却效应,使火焰传播速度增大。
3.
The fire risk of the external wall thermal insulation systems is flame spread on the outside of the building.
外保温系统的火灾危险性是火焰传播,采取有效的防火构造措施,是提高外保温系统整体防火安全性的有效途径。
4)  flame spreading
火焰传播
1.
A model was developed of flame spreading over thermally thin fuels in thispaper, in which gaseous and solid surface radiative heat losses are included and the soliddensity at burnout exists as a parameter.
数值计算结果表明,在微重力环境中,火焰传播速度随空气流动速度的变化出现峰值。
2.
In a reference frame attached to the flame front, the flame spreading rate becomes an eigenvalue for the flame spreading over a rod fuel.
当参考坐标系团结在火焰前锋上时,该火焰传播问题成为一准稳态问题,燃料以一固定速度供给火焰。
3.
The three--dimensional ullsteady processes of flame spreading in an enclosed chamber have been studied with numercial methods for the first time.
首次用数值模拟的方法研究了密闭腔体内火焰传播的三维非稳态过程,对于微重力大小分别为10-4g和10-2g时的计算结果进行了分析对比。
5)  flame propagation mode
火焰传播法
6)  propagation of flame
火焰的传播
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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参考词条