drill base中文什么意思

基台

• drill:    n. 【动物；动物学】(西非的)鬼狒 ...
• base:    adj. 1.贱的，劣的；卑下的，低 ...
• be at drill:    正在出操

例句与用法

1. A forecasting system for wear of drill based on rough set
   集的钻头磨损状态预报系统
2. The company is located in national drills base - furong town , which lies
   我厂位于国家级风景区世界地质公园之称
3. In the process of manufacturing printed circuit board ( pcb ) , every board has to be drilled based holes firstly . so the precision of based holes greatly influence the quality of pcb
   在印刷电路板生产中,定位孔的精度对pcb加工质量有很大影响,传统的加工方法是靠人眼直接瞄准,影响定位精度和生产速度。
4. This paper presents the r & d of the pcb auto locate drill based optical scanning . this thesis targets to discuss an application of combination with machine visual technology , machinery technology and nc technology in the r & d of machine for pcb manufacture
   本课题旨在将机器视觉技术结合机械制造技术和数控加工技术应用于pcb制造机器的设计研发之中,从而可以提高pcb的加工效率和精度,降低生产成本。
5. We developed the power system of electric drill based on dc - ac . the system use the technique of spwm frequency cowersation control . it changed th d . c provided by trolly wire of d . c motor into stable a . c adopted igbt and driving circuit adopted high speed module of exb840
   针对当前我国煤矿电钻电源的使用现状，提出研制dc - ac变换的电钻电源系统，该电源系统直接利用spwm变频控制技术，将井下直流电机车的架空线所提供的直流电转变成频率是50hz的1 . 27v的稳定交流电。