Median Particle Size D50(um)什么意思?

Median Particle Size D50(um)什么意思? volume weighted median particle 20-35um particle size中的um是什么意思 particle size 和 Crystallite size分别指什么?particle size指粒径?Crystallite size指晶粒大小?我翻译的对吗?两者在概念上怎么区分?具体含义是怎样的? ArrayList particles; void setup() { size(800,800); particles = new ArrayList(); smooth(); } void draw() { particles.add(new Particle()); background(255); for (int i = 0; i < particles.size(); i++ ) { Particle p = (Particle) particles.get(i); p.run(); 英语翻译Effects of particle size distribution on the refractory properties and corrosion mechanism of ultra-low cement castablesABSTRACTPurpose:This study examines the effects of distribution of particle size-dimensions on refractory properties o Intersecting Median trade name:Aluminium oxide #16 (27.5 microns)客户说；Can you provide me your MSDS for Aluminum Oxide Brown 27.5 microns particle size?Current Aluminum Oxide specificationsAluminum Oxide media composition:27.5 microns particle sizeAppearance and c The particle size of sugar.这句话怎么翻?The particle size of sugar is of significance and it has been shown that castor sugar of small crystal size promotes better aerating ability than either coarser (A1) or finer (icing sugar). 英语翻译PHYSICAL PROPERTIESMelt temperature (Degree C) 110Whiteness 96Heat stability (Degree C) 300Particle size of granule 2-3mmLight fastness 7-8Technical specification:SGS certificate Size 集料粒度和粒度有什么区别谢谢了,:lairen:aggregate size 和particle size 这两个有什么区别啊?以前接触的都是粒度,集料粒度今天刚看到的,但是查了下还是没明白, 数学中 Median-Median 中文叫什么? Matlab median命令是什么意思 median correlation是什么意思 median diameter是什么意思 median estimate是什么意思 一道英文数理统计题,全题如下：（a).What is the probability that the larger of two random observations from any continuous distribution will exceed median (b).Generalize the result of part (a) to samples of size n .