重力驱动仅在储层岩石中存在高闭合度和油柱的情况下在储层开发的早期是有效的。
Gravity drive is effective in the early stages of reservoir development only when there is high relief in the reservoir rock and oil column.
结果表明，该法能有效检测头孢克肟的中间体，具有柱效高、经济等优点，可用于头孢克肟反应过程的监测。
The results show that the method can detect the content of cefixime intermediates effectively and economically. This HPLC method can be used to monitor the cefixime reaction process.
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