The central sampling drilling is a new method which has the characteristics of efficient, accurate sampling and high percentagerecovery of Core.
中心取样钻探是一种全新的钻探方法，具有效率快、取样准确、岩样采取率高的特点。
2
Results computed indicate that not only high percentagerecovery of high concentration nonpermeate gas but also high concentration of permeate gas were obtained by this system.
用此流程可得到高浓度不易渗透气体的高回收率，同时得到高浓度的易渗透气体。
3
Q: If you are in a disaster recovery state, what percentage of normal operating capacity do you need to stay in business?