The sealing property is one of the main indicators of kelly stopcock.

密封性能是方钻杆旋塞阀主要指标之一。

The main neck is fitted with the dropping funnel with its stopcock open.

然后在主颈上固定滴液漏斗，且滴液漏斗的活塞需打开。

Besides, a few of energy saving stopcock, lamps will also appear at this expo.

一些节能水龙头、节能灯、仿原生态地板、陶瓷、绿色厨房等产品都将集中亮相。

Then the dropping funnel stopcock is closed and vigorous stirring is the continued for a further 30min.

之后，关闭滴液漏斗活塞并继续用力搅拌30分钟。

So we need to save energy in our daily life, such as close stopcock, lights, air-conditioning and fans when we leave.

所以我们需要在我们的日常生活中节约能源，如在我们离开的时候关闭水龙头，灯，空调和电扇。