最后，讨论了大柴旦盐湖卤水和小柴旦盐湖卤水的硼同位素组成的差异。

Finally, the boron isotopic difference between Dachaidan and Xiaochaidan salt lake was also discussed.

地震发生时，大柴旦一带大煤沟煤矿矿区震感强烈，部分房屋出现裂缝。

When the earthquake occurred, qaidam ditch along the major coal mining area coal mine felt strongly that part of the housing cracks.

并对青海大柴旦地区和湖北潜 江地区的石盐中的硼进行了提取和同位素组成的测定；

The isotopic compositions of boron in halites from Qaidam Basin, Qinghai Province and Qianjiang, Hubei Province were measured.

在青海大柴旦地区有大量的柱硼镁石矿由于品位低下（低于10%），不能直接用作生产硼化学品的原料。

There is a large number of pinnoite ore in Dachaidan area of Qinghai province, these boron resources can not be directly used as raw materials for boron chemicals because of low grade (less than 10%).

县行政区也有许多边界延伸。

The county boroughs also had many boundary extensions.