1.
Design and Research on AC Variable Frequency Rig Electrical System Based on Fieldbus;
基于现场总线的交流变频钻机电气系统设计与研究
2.
The research on the experimental system for automatic bit feed with variable frequency drive
变频驱动钻机自动送钻试验系统的研究
3.
Simulation of Electric Rig Hoisting System Driven by AC Variable-Frequency Motor
交流变频电驱动钻机起升系统的模拟
4.
The technical level and development trend of chinese AC VF drilling rigs
我国交流变频电动钻机的技术水平和发展趋势
5.
The configuration and debugging in the mud pump variable-frequency drive system of oil rig
石油钻机泥浆泵变频系统的配置与调试
6.
Design of Automation Drilling Based on Profibus and Frequency-inverter Regulation Technology
现场总线的变频调速自动送钻控制系统设计
7.
Analysis of force state for adjustment drill frame of roof bolter
锚杆钻机立面变角机构受力状态分析
8.
commutator frequency changer
换向器变频机整流子频率变换器
9.
The Application of ACS800 Transducer in the Course of Paper-machine Conversion Drive
ACS800变频器在纸机变频传动中的应用
10.
To bore(a shaft) with a trepan.
钻用钻井机钻（矿井）
11.
Design Improvement on Variable Transfer Case of GZ-ⅢA Drilling Rig
SGZ-ⅢA型钻机变速分动箱改进设计
12.
single conversion superheterodyne
一次变频超外差接收机
13.
double superheterodyne receiver
双变频超外差接收机
14.
dual-conversion superheterodyne receiver
双变频超外差式接收机
15.
triple superheterodyne
三次变频超外差接收机
16.
AC-electronic motor
离子(变频)式交流电动机
17.
receiver input converter
接收机设备输入变频器
18.
Inverter Type Electric Power Test Stand Based on PLC Control and DEVICENET Network
测试变频电机用的交流变频电力测功机系统