Sealed batteries are not really sealed because all wet cell batteries have to be vented in order to discharge the build up of pressure during charging .
密封电池并不是真正密封，因为所有的湿电池都必须宣泄，以便履行积聚的压力在收费。
2
Finally, opening the flood diversion work's gate is through blasting or manpower, and the open order influences the discharge and elevation of water in main river.
According to largest quantity of free discharge and orderof designing peak flow quantity in the flood discharge, flood regulation routing formula of general graph is computed.