This study, by comparing the lexical frequency of Chinadaily and Guardian, investigated the ultimate attainmentof Chinese L2 learners from the perspective of the overuse and underuse, finding that there is overwhelming underuse of the closed-class words in Chinadaily.

最终习得情况是第二语言习得研究的一个中心话题。

The result shows the oil composition and pore structure have a strong effect on the rate of self adsorption and ultimate recovery.

研究结果表明 ,原油组分、孔隙结构对自吸速度及最终采收率有较强影响。

Based on analyzing potentials of such type of nine gas reservoirs in East Sichuan basin and their ultimate recoveries and in accordance with characteristics of different developing modes and remaining reserves analysis,the ultimate recovery under present exploitation condition is predicted.

在对川东9个开发后期的整装石炭系气藏资源潜力和最终采收率分析研究的基础上,根据气藏不同开发模式特征及对剩余储量的分析,对目前开采条件下的最终采收率进行了预测。