石超 meaning in Chinese

shi chao

Preparation of ultrafine wollastonite powder by sol - gel method
凝胶法制备硅灰石超细粉体
Experimental research on application of grinding compound aid in superfine grinding of brucite
助磨剂在水镁石超细研磨中应用的试验研究
Abstract : this paper dicussed the preparative parameteres synthesized mullite ultrafine powder by sol - gel and co2 scfd ( supercritieal fluid drying ) method from teos and al ( no3 ) 3 ? 9h2o as raw materials . the control parameteres of the colloidal particle size forming in sol - gel process and the gel structure and the scfd were studied by , xrd , tem and bet techmiques
文摘:研究了以正硅酸乙酯和硝酸铝为原料，采用溶胶一凝胶法结合co2超临界流体低温干燥技术合成莫来石超细粉的制备参数控制，并利用xrd 、 tem和bet 、技术研究了溶胶-凝胶过程中溶胶胶粒大小的控制和凝胶结构的控制及超临界流体干燥技术的控制。
Abstract : the basic theory and characteristics of superfinishing technology using abrasive stones are introduced . its application to the surface finishing and modification is highlighted for bearing rollers , cam & amp; followers and piston rings in locomotives and vehicles , broadening the application fields of superfinishing
文摘:介绍了油石超精技术的基本原理和特点. & 01 ;对其在机车车辆轴承、凸轮和活塞环光整及修形加工中的应用作了详细阐述，拓展了该技术的应用领域