1) analysis of harmful particle size
有害粒径
1.
The methods of key parameters for design of silting basin are introduced, including the sediment transportation laws of heavy silt carrying river, sediment grading, analysis of harmful particle size, selection of sedimentation rate and operation scheme, determination of parameters of silting basin size, and layout of project.
介绍了沉沙池设计中关键性参数的确定方法,包括河流输沙规律、泥沙粒径构成、有害粒径分析、沉沙率的选定、工作制度拟定以及沉沙池几何参数确定及工程布置等。
3) effective size
有效粒径
1.
The results shows that the effective size and uniform coefficient for SP-1,SP-2 and SP-C are respectively 161.
结果表明:SP-1有效粒径为161。
2.
In accordance with the effective size of nature soil conforming wostly with normal distribution, the physical signification and existing problem on the grading index of the soil grain are discussed.
针对天然土中粒径分布大多符合对数正态分布这一事实,在土粒级配曲线近似为正态分布这一前提下,探讨了目前广泛采用的粒度分析中级配指标的物理意义及其存在的问题,并提出了划分有效粒径的方法。
4) effective grain size
有效粒径
1.
Based upon permeability test the influences of the porosity, average pore size, effective grain size, mean particle diameter and coarse grain on its permeability are studied.
通过渗透试验,研究了无粘性土的孔隙率、平均孔隙直径、有效粒径、平均颗粒直径及较粗颗粒粒径等因素对其渗透特性的影响,并用所得修正公式的计算结果与前人的计算结果进行比较。
5) protection from harmful particular matter
防护有害微粒
6) efficieht molecular diameter
有效分子粒径
补充资料:调和平均粒径
分子式:
CAS号:
性质:在混合颗粒中,直径为d1、d2、…dn的颗粒的质量分率,分别为x1、x2、…xn,则混合颗粒的调和平均直径可按下式计算:
CAS号:
性质:在混合颗粒中,直径为d1、d2、…dn的颗粒的质量分率,分别为x1、x2、…xn,则混合颗粒的调和平均直径可按下式计算:
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