rotary drill मीनिंग इन हिंदी

In 1813 Richard Trevithick designed a steam-driven rotary drill, also the first drill to be powered by steam.
In 1987, Washington capped years of threats against Japan over semiconductor trade with a mere $ 300 million in sanctions on such relatively minor goods as grinders, rotary drills and low-performance computers.
The surgery was performed while the patient was under a local anesthestic but awake, with a crude rotary drill to bore holes and a metal straw to suck out the seahorse-shaped hippocampus.
On October 19, 2016, the Federal Aviation Administration ( FAA ) determined that a 110-foot-tall LB 44 rotary drill rig would not pose a hazard to air navigation, so it approved the first of several pieces of heavy equipment to be used during construction.
The explosion of ignimbrite was the largest in the last 200, 000 years of European history The ornaments, perforated by hand-operated rotary drill, found at Kostyonki 17 Layer II, predate the volcanic eruption and suggest that the population was " technologically ready " for an incoming volcanic winter.