This article presents a built up sleeve method to change the collar of cone type piercer,including the calculation of the shrink fit of the roller ring that the roll surface is conic.
介绍用镶套的方法更换锥形穿孔机轧辊辊环，对外表面为锥面的轧辊辊环的过盈联接进行了计算和设计，提出了一种对过盈联结中包容件外表面不是圆柱面时的实用计算方法。
A keyboard machine that is used to punch holes in cards or tapes for data-processing systems.
键盘穿孔机一种键盘机器，用于为处理信息系统而在卡片或磁带上打孔
Perforator: Key board which produces prunched paper tape.
打孔机:把纸带打孔的键盘。
Tape Printing;Tape Perforating;Tape Printing/Perforating;Page Printing;Keyboard;Facsimile
带式印刷;纸带穿孔;带式印刷/穿孔;页式印刷;键盘;传真
A keyboard-actuated punch that punches holes in a data medium.
一种由键盘操纵的穿孔设备，用以在数据载体上进行穿孔。同keyboardpunch。
a mechanically operated piano that uses a roll of perforated paper to activate the keys.
用滚动的穿孔纸激活键盘的自动演奏的钢琴。
In paper tape equipment, a tape punch operated by a keyboard, by received signals or by another unit.
在纸带设备中,用键盘或接收到的信号或由另一台设备操作的纸带穿孔机。
Rebuilding for ф140 horizontal toteing disc CTP
ф140卧式带导盘锥形辊穿孔机的改造
DEFORMATION OF METAL IN A 2-SKEW-ROLL PIERCING MILL WITH SINGLE ROTATING DISC
单主动导盘二辊斜轧穿孔机中金属变形
paper tape puncher
纸带穿孔器纸带凿孔机
a typewriter ribbon, keyboard
打字机色带、 键盘.
Experimental Study on Key Parts of Cell Type Seeder for the Seedling-growing Tray Made of Paddy-straw
植质钵育型孔式秧盘播种机关键部件的试验研究
computerized embroidery punching machine
计算机化锈花穿孔机
key computer priner
计算机的键盘打字机
tape reperforator
带式自动纸带穿孔机
reeves electronic analog computer
穿孔电子模拟计算机
directing punched spooled output
指向穿孔假脱机输出
ROTR (Receive-Only Typing Reperforator)
收报专用打字穿孔机
CO^2 laser perforator
二氧化碳激光穿孔机