Soil , investigation and testing - determination of grain - size distribution 建筑地基.勘探和試驗(yàn).粒度分布的測(cè)定
Grain - size distribution may be characterized in part by skewness of the distribution 粒徑的分布具有偏態(tài)分布的特點(diǎn)。
On application of laser grain - size distribution meter in particle - size analysis and research of sediment in the yangtze river 激光粒度分布儀在長(zhǎng)江泥沙分析研究中的應(yīng)用
The general characteristics of the grain - size distribution of different sedimentary facies , es pecially the variations of the parameters mz ( mean particle diameter ) and o ( standard deviation ) clearly show that the fluvio - lacustrine facies and palaeosols usually become finer in particles and worse in sorting than the aeolian sands 該剖面不同沉積相粒度的一般分布特征尤其是粒度參數(shù)? mz 、的變化明顯表現(xiàn)出,河湖相或古土壤通常要較風(fēng)成砂顆粒細(xì)化,分選相對(duì)較差。
Qwy acid soluble temporary blocking agent is made of carefully chosen natural mineral material , which is processed into serial products of different grain - size distribution according the pore throat characteristics of different reservoirs . it can better match the pore throat along with the reservoir , and at the same time achieve better results of bridged temporary plugging as a result . 1 Qwy酸溶性暫堵劑是以天然礦物為主要原料經(jīng)過篩選精制而成,在生產(chǎn)過程中根據(jù)各種儲(chǔ)層孔喉特征,加工成具有不同粒度分布的系列產(chǎn)品,使其與儲(chǔ)層具有更好的孔喉匹配性和更強(qiáng)的橋架暫堵效果。