当主体置入于水中时，发光模块可产生发光，藉以显示主体于水平 面下的位置。
When the main body is arranged in the water, the light-emitting module can give out light, thereby the position of the main body under the horizontal plane is displayed.
当主体置入于水中时，发光模块可产生发光，藉以显示主体于水平 面下的位置。
When the main body is arranged in the water, the light-emitting module can give out light, thereby the position of the main body under the horizontal plane is displayed.
应用推荐