Size: 80/100 mesh powder and 25 to 30mm lumps.是什么意思啊

Size: 80/100 mesh powder and 25 to 30mm lumps.是什么意思啊 What is the definition of Mesh Size 后面那个Mesh Size什么东西啊,求英文概念啊! mesh po po Size -16 to +80 mesh -150 fines 分别是啥意思? 什么是MESH square mesh 英文询盘,客户具体要求.尤其是这个milled to 400 mesh size.We want to set up a pyrolysis plant using waste tyres to generate carbon black ,hydrocarbon oil etc.,We want carbon black to be milled to 400 mesh size.Pl give quotations for vari x=-8:.5:8; y=x'; x=ones(size(y))*x; y=y*ones(size(y))'; R=sqrt(x.^2+y.^2)+eps; z=sin(R)./R; mesh(z),我想问一下你,请问size(y)是什么意思?我是新手, matlab投影到坐标平面[r,t]=meshgrid(0:0.1:2,pi*(0:0.1:2)); x=r.*cos(t); y=r.*sin(t); z1=sqrt(5-r.^2); z2=r.^2./4;mesh(x,y,z1);hold on mesh(x,y,z2);hold on;n=zeros(size(r)); 然后怎么投影到各个坐标平面 EXCEL公式是否正确评分计算公式：A、当Pn≥Po时,S = 70 -（Pn-Po）/Po*100*2 B、当Po＞Pn≥70%Po时,S = 70 +（Po-Pn）/Po*100*1 C、当Pn＜70%Po时,S = 70 -（(Po*70%)-Pn）/Po*100*1 Pn为报价,Po为评审基准价,S为价格评 英语翻译1） Mills must inspect %100 of their fabric before shipment.2） No more than 4 points are to be assigned to one linear meter.3） Holes are automatically 4 points regardless of size.4） For woven fabrics:Maximum number of acceptable po air mesh fabric是什么意思 open mesh fabric是什么意思 wire mesh carrier 镁粉200mesh是什么意思