If energy were to flow spontaneously from a block of ice to a surrounding volume of water, this could occur in complete accord with energy conservation.
如果能量能自发地从冰块扩散到周围的水中，这种现象的出现就完全符合能量守恒。
By use of the time split method, a conservation difference formula is established to find the solution to the shallow water equation based on the finite volume control method from integral equations.
采用二分步法，从积分型方程出发，在有限控制体上建立守恒型差分格式，对二维浅水波方程进行求解。
The utility model has the advantages of high efficiency, small volume, low cost and water conservation, and can greatly reduce the pollution of smoke dust.
本实用新型效率高，体积小，成本低，省水，能大大减少烟尘的污染。
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