期刊文献+
共找到5篇文章
< 1 >
每页显示 20 50 100
传像光纤坯棒拉制设备及工艺
1
作者 齐艳 《机械管理开发》 2012年第2期80-81,共2页
通过对传像光纤坯料拉制的描述,并与传统的熔压工艺作了比较,得出坯棒拉制的必要性。对实现拉制的关键设备及工艺做了详细的阐述。
关键词 传像光纤坯棒 拉制设备 拉制工艺
下载PDF
小型拉线机实现大容量收线的张力控制系统
2
作者 张东亮 孙学礼 于发忠 《山东工业大学学报》 1995年第4期390-393,共4页
小型拉线机实现大容量收线的张力控制系统张东亮,孙学礼,于发忠(山东工业大学自动化工程系济南250014)小型拉线机控制的线材成品直径一般在0.Zmm左右,由于线径较细,加之国产小型拉线机收线张力控制手段落后等原因,致... 小型拉线机实现大容量收线的张力控制系统张东亮,孙学礼,于发忠(山东工业大学自动化工程系济南250014)小型拉线机控制的线材成品直径一般在0.Zmm左右,由于线径较细,加之国产小型拉线机收线张力控制手段落后等原因,致使拉制过程中断线频繁,一次断线的收... 展开更多
关键词 拉线机 张力控制系统 收线 拉制设备
下载PDF
冷拉退火炉节能的探讨
3
作者 王根鹿 《中机信息》 1989年第2期5-12,共8页
关键词 金属 拉制设备 冷拉退火炉 节能
下载PDF
6/500成绳机托轮的改进
4
作者 周江一 朱宏 《金属制品》 1989年第A00期78-79,共2页
合绳、捻股机的托轮改进前易损坏,严重影响车间的正常生产。改进后的托轮受力均匀,承载能力强,使用寿命大大提高,且便于维修和安装拆卸。
关键词 成绳机 托轮 拉制设备
全文增补中
Land Leveling with Modern Machinery for the Implementation of Agricultural Activities in Greece
5
作者 E.A. Karagiannis P.B. Kararizos K.P Zannis M.G. Kalaitzi 《Journal of Environmental Science and Engineering》 2011年第6期765-770,共6页
Incorporating modem and advanced technology (various electronic devices) to excavational machinery led to become more efficient, better quality and cost effective. The continuous development of equipment is also ver... Incorporating modem and advanced technology (various electronic devices) to excavational machinery led to become more efficient, better quality and cost effective. The continuous development of equipment is also very important in the earth moving procedures which require significant time and expense to achieve the so-called "precision agriculture" or rather "precise management of agricultural inputs". One of the "precision agricultural" works is the land leveling. In recent years, land leveling is done with the use of a scraper (blade) mounted on the agricultural tractor. An electronic system controls the height of the blade automatically, without any operator intervention. In this paper, the field efficiency of the tractor MF6290, of 135 Hp horsepower, is calculated with a leveling blade of 4 m width, in the land leveling of rice cultivation, and in the rotation of different crops in different land preparation conditions (initial and final slope) in the area of Thessaloniki, northern Greece. The raw data revealed that the performance of the tractor ranged from 0.402 to 0.82 lha/h, on a slope 0%, while for surfaces with different initial and final slope, it ranged from 0.107 to 0.118 ha/h. 展开更多
关键词 Land leveling rice cultivation crop rotation EFFICIENCY
下载PDF
上一页 1 下一页 到第
使用帮助 返回顶部