According to legend, King Arthur gained the crown by pulling a sword from a rock.
据说，亚瑟王当年从岩石里拔出一把剑就得到了王位。
2
The results show that the crown ether extraction- neutron activation method can be satisfactorily applied to the separation and determination of trace rhenium in rock samples and complex systems.
研究结果表明冠醚萃取中子活化法可较好地用于岩石和复杂体系中痕量铼的分离分析。
3
The ground surface settlement, crown settlement, convergence of surrounding rock, etc, are monitored and measured during the Fantun tunnel construction of Jianxing Highway.