Abstract: A battery assembly comprises a battery case, a battery defined in the battery case, and a connection assembly for being connected to an atomization assembly; the battery assembly further comprises: a first connection member, a second connection member, a potentiometer, and a temperature control adjustment valve; the temperature control adjustment valve is movably sleeved on a connection arm for connecting the first connection member and the second connection member and is rotatable relative to the connection arm; the potentiometer is electrically connected to the connection assembly; electric potential of the potentiometer can be adjusted by rotating the temperature control adjustment valve, in order to adjust the power supply from the battery to the atomization assembly, and then temperature of a heating wire in the atomization assembly is adjusted. The battery assembly is capable of adjusting the temperature of the heating wire, simple and compact in structure, and convenient to operate.

Abstract: The present invention discloses a concrete structure used for bank protection and scour prevention of river bank and coast. Its construct is a hollow circular truncated cone and concrete flat plates are plugged on the hollow circular truncated cone. By tearing, dispersing and stirring up water flow, the energy of local water flow is dissipated, and the scouring strength of the water flow is weakened, achieving the aim of scour prevention and bank protection. It has good mechanical property, not easy to be destroyed, has good stability in water and big overhead rate, and can save materials. Compared to previous various structures for scour prevention, the present invention has better effects of energy dissipation and scour prevention. It not only can be used in bank protection and scour prevention, but also can be used for supplementary energy dissipation when plugging and closure.