first bit是什么意思

用法例句

This paper describes in detail the characteristics of PGB-free drilling technology, selection of spud-in mode and related technical approach in application of the technology, as well as introduces the first practical implement case in CNOOC’ s Pin.

对无基盘钻井技术的特点,以及在东海平湖油气田应用该项技术时开眼钻井方式的选择、相应的技术措施作了详细阐述,并介绍了现场实施情况。