Warning: file_put_contents(): Only 0 of 5028 bytes written, possibly out of free disk space in /www/wwwroot/ppbbu/cp667.com/index.php on line 55 two series of strata是什么意思，two series of strata的翻译，two series of strata音标、读音、用法和例句_淳朴汉英词典
The technique of producing long span and two series of strata can satisfy the need of exploitation two series of strata. 3、大跨距、雙層系油藏開採技術目前已基本配套,能夠滿足兩套層系油藏開採的需要。