A novel method of the paper roughness measurement using airborne ultrasound is given,and mathematic model of the relation between the paper roughness and ultrasonic echo output voltage is established.
提出一种用超声波实现对纸粗糙度测量的新方法,根据超声波回波的特性,建立了纸表面粗糙度和回波输出电压的数学模型。
Chip board: A low grade board made from waste wood and paper and used in bindings.
粗纸板: 装订用的次等纸板。用木屑和废纸造成。
grit size, grit number
[砂纸]粒度号数,粗细
A rough surface, as of paper or metal.
粗糙表面粗糙表面，如纸张或金属的
Paper and board--Determination of the roughness (Bendtsen method)
GB/T2679.4-1994纸和纸板粗糙度的测定法(本特生粗糙度法)
Poster paper: Test designed to determine the ability to withstand the effects of rubbing and scuffing of printing ink.
海报纸:一面光滑，另一面粗糙，适合粘贴的纸。
Paper and board--Determination of roughness(Print-surf method)
GB/T2679.9-1993纸和纸板粗糙度测定法(印刷表面法)
having a rough edge; used of handmade paper or paper resembling handmade.
有粗糙的边缘；用来指手工纸或者类似手工的纸。
rough edge left by a deckle on handmade paper or produced artificially on machine-made paper.
在人造纸或是机器造纸时用使纸浆定型的制模框而形成的粗边。
The book was printed on rough yellow paper.
这本书用粗糙的黄纸印刷。
The Nanjing papercuts of Jiangsu Province are simple, robust and skillful.
江苏南京剪纸淳厚，粗中有巧，
Doped out our proposal on scratch paper.
在便条纸上粗略地写出了我们的计划
A heavy off-white fine-quality paper resembling this parchment.
仿犊皮纸；仿羊皮纸类似精制犊皮或羊皮纸的一种粗糙的、黄白色的优质纸张
To impart an irregularly rough, grainy surface to(leather or paper).
弄粗糙，印卵石花纹给（皮革或纸张）以极为粗糙和粒状表面
An irregularly rough, grainy surface, as on leather or paper.
粗糙表面，卵石花纹不均匀的粗糙状表面，如皮革或纸面
The cutter first cuts the outline of the pattern, then sews it onto another piece of paper.
每剪成一个图形，把它用线粗粗地缝在另一张纸上，
Eggshell antiwque: Soft, bulky paper with a slilghtly dull matt surface, like that of an egg shell.
蛋壳仿古纸:软而厚的纸。表面像蛋壳的无光泽和粗糙。
Coarse screen: A halftone screen of up to 34 lines per cm used in illustrations printed on newsprint and other cheap papers.
粗网:每厘米34线以下的半色调网线。印在新闻纸和其他廉价纸张上的插图，多用粗网。
It was tabloid size and had only eight pages, which were badly printed.
那是一份小开报纸，只有八页，印刷得很粗糙。
