1) drop volume method
滴体积
1.
The methods were capillary rise method,Wilhelmy plate method,pendent drop method,drop volume method,maximum bubble pressure method.
本文着重介绍了几种液体表面张力的测定方法(包括毛细管上升法、Wilhelmy盘法、悬滴法、滴体积法、最大气泡压力法),包括这几种方法的测定原理、优缺点及改进方法,特别指出了宽温度和压力范围的表面张力测定存在的问题,实验方法的选择及表面张力测定方法的发展趋势。
2) drop volume method
滴体积法
1.
The apparatus of drop volume method was made in this paper,accuracy of which was verified according to the literature value.
采用自制的滴体积法实验装置,以蒸馏水的表面张力作为标准,检验了其精确性。
2.
The dynamic surface tensions(DST) of aqueous cetylpyridinium bromide(CPB)solutions at various concentrations was measured, by using the drop volume method.
滴体积法测定了十六烷基溴化吡啶(CPB)水溶液的动态表面张力。
3.
The dynamic surface tensions(DST)of aqueous cetylpyridinium bromide (CPB)solutions at various concentrations and temperatures were measured by the drop volume method,the effect of concentration and temperature on the dynamic surface tension was discussed.
滴体积法测定了十六烷基溴化吡啶溶液的动态表面张力。
3) droplet volume
熔滴体积
1.
From the viewpoint of transfer of one droplet per pulse and a constant droplet volume,the paper puts forward a control mode in which the peak current and background current are fixed,while peak timeand background time are presetted by the wire feed rate and adjusted by the peak arc voltage.
基于一个脉冲过渡一个熔滴且熔滴体积不变的思想,提出了在峰值电流和基值电流不变的条件下采用送丝速度预置和峰值弧压调节峰值时间与基值时间的控制方式。
4) Drop Volume
液滴体积
1.
Image processing technology used for drop volume calculation;
图像处理技术用于计算液滴体积
2.
The drop volume testing is based on the changing capacitive with the drop descending.
液滴体积的测量方法是利用液滴增长过程电容的变化来监测液滴体积的变化,从而实现液滴体积的测量。
5) volume of a drop of oil
油滴体积
1.
This paper introduced the improvement measure method for the volume of a drop of oil and area of the oil film in the experiments of roughly measure molecular size by oil film method.
介绍了“用油膜法估测分子的大小”实验中,对油滴体积和油膜面积测量的改进方法。
6) dropping volume method
珠滴体积法
1.
his paper,on the basis of the analysis of liquid surface measurement,puts forward a principle on which liquid surface tension by road-asphalt emulsion can be measured with the help of dropping weight method and dropping volume method,and works out the computation methods for measuring the testing instruments,steps and results and its application.
本文在分析液体表面张力测定方法的基础上,提出了采用珠滴重量法和珠滴体积法测定道路沥青乳化剂水溶液表面张力的基本原理、测定装置、测定步骤和测定结果的计算方法及其应用。
参考词条
补充资料:滴体积法
分子式:
CAS号:
性质:一种测定液体表(或界)面张力的方法。将液体自能润湿的垂直厚壁毛细管下端缓慢流出,形成一悬挂的液滴,当此液滴自管口滴落时,液体的表(或界)面张力γ与液滴体积V(或重量mg)、管口半径r服从下述关系:式中,g为重力加速度常数;m为1滴液体质量;F为与V及r有关的校正因子;ρ2为液体密度;ρ1为液体外介质密度,当外介质为气体时ρ1可以忽略。液滴的体积可由测定滴头上已校正好的体积刻度读出,质量m可称重。此法所得数据准确,方法简便,一般实验室均可采用。
CAS号:
性质:一种测定液体表(或界)面张力的方法。将液体自能润湿的垂直厚壁毛细管下端缓慢流出,形成一悬挂的液滴,当此液滴自管口滴落时,液体的表(或界)面张力γ与液滴体积V(或重量mg)、管口半径r服从下述关系:式中,g为重力加速度常数;m为1滴液体质量;F为与V及r有关的校正因子;ρ2为液体密度;ρ1为液体外介质密度,当外介质为气体时ρ1可以忽略。液滴的体积可由测定滴头上已校正好的体积刻度读出,质量m可称重。此法所得数据准确,方法简便,一般实验室均可采用。
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