?自然递减率
自然递减率
It's becoming increasingly difficult for oil companies to find enough natural gas to replace North American wells that are declining at 30% per year, double the rate of a decade ago.
FORBES: Drilling For Dollars
英汉双解词典包含3185865条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。