the auxiliary brake of ac-vfd drilling rig is dynamic brake. . electric-drive drilling rig the drive mode of dc electric-drive drilling rig is ac-scr-dc, while ac electric-drive drilling rig is ac-dc-ac; it is equipped with a complete diesel generator as the power source. draw-works adopts hydraulic disc...
collecting abrasive belt grinder brief introduction: igrind- abrasive band grinder ... - - : : contact now add to cart automatic metallographic grinding machine with single loading polishing head metallographic grinding automatic polishing machine with polishing head brief introduction: igrind- is a double disc...
the auxiliary brake of ac-vfd drilling rig is dynamic brake. . electric-drive drilling rig the drive mode of dc electric-drive drilling rig is ac-scr-dc, while ac electric-drive drilling rig is ac-dc-ac; it is equipped with a complete diesel generator as the power source. draw-works adopts hydraulic disc...
collecting abrasive belt grinder brief introduction: igrind- abrasive band grinder ... - - : : contact now add to cart automatic metallographic grinding machine with single loading polishing head metallographic grinding automatic polishing machine with polishing head brief introduction: igrind- is a double disc...
computer computer museum d digital audio tape digital video diode dvd e electronic circuit electronics g general electric h high-definition television i international business machines l light-emitting diode m microphone microsoft modem o optical disc p photoresistor plasma display panel p cont. printed...