Standard test method for particle size range of peat materials for horticultural purposes 園藝用泥炭材料粒度范圍的標(biāo)準(zhǔn)測(cè)試方法
It is in white or light gray color and has a particle size ranged from 20 to 500 microns 顏色為白色或淺灰色,粒度在20 - 500微米之間。
Determination for particle size range , effective size and uniformity coefficient of ion exchange resins 離子交換樹(shù)脂粒度有效粒徑和均一系數(shù)的測(cè)定
Contrarily , w - cu powder prepared by reducing the mechanically mixed wo3 - cuo oxides has a particle size ranging from 0 . 1 to 1 m with irregular partic le shape and non - uniform distribution of w and cu composition 而機(jī)械混合氧化物共還原法制備的w - cu復(fù)合粉顆粒較粗大,其粒徑分布范圍在0 . 1 1 m之間,顆粒形狀也并不規(guī)則。
The test results have showed that the w - cu powder produced by the homogeneous precipitation process has a near spherical shape , a particle size ranging from 50 to 200nm and a uniform distribution of w and cu gradients 研究結(jié)果表明,均相沉淀法制備的w - 30wt . cu復(fù)合粉末顆粒明顯呈球狀, w 、 cu組分呈均勻、彌散分布,透射電鏡觀測(cè)顯示其粒徑范圍在50 - 200nm之間,為超細(xì)粉體。