Abstract: A vehicle body floor assembly for a vehicle includes a vehicle body mounting structure; and a battery pack, the battery pack including a battery module and a housing, the battery module being provided in the housing, the housing being connected to the vehicle body mounting structure, and at least a portion of the structure of the housing being configured as a vehicle body floor of the vehicle. The structure enables an integration level of a vehicle body and the battery pack to be higher. In addition, also provided is a vehicle having the vehicle body floor assembly.

Abstract: Disclosed is a power-adjustable wave power generator, comprising a support platform (1), a power generator (2), a rotary shaft (3), an impeller rod (4), a blade frame (6), blades (7), a synchronous movement mechanism and a lifting mechanism. The power generator (2) is arranged on the support platform (1) and connected to the support platform (1). The impeller rod (4) is radially connected to the rotary shaft (3). The blade frame (6), which is provided with several blades (7), is slidably connected to the impeller rod (4). The synchronous movement mechanism adjusts the distance of the frame (6) relative to the rotary shaft (3). The lifting mechanism adjusts the angle of the blades. The power generator can not only effectively generate power under the condition of small waves, but also can adjust extracted energy according to a full load of power generation when a wave force remains unchanged, and can automatically prevent a disaster under the condition of a catastrophic climate.

Abstract: A method is provided for modeling and analyzing a generalized microscopic stress concentration phenomenon on a machined surface.