Introduced technological diagram, amount control for material input, adjustable device for flow rate, the principle, structure, advantage of the waterplug pump and the operating result.
介绍该装备的工艺流程、下料量的调节控制、可调式恒流装置、堵水泵的原理、构造、优点及装备的应用情况。
2
She pulled out the plug and let the water drain away.
她拔起塞子放掉了水。
《牛津词典》
3
She pulled out the plug and the water drained away.