1)circular bubble,圆水准器2)plate level,圆盘水准器3)circular level vial,圆形水准器4)Circular rod leve,圆盒水准器5)circular spirit level,圆形酒精水准器6)burende,圆水准气泡
用法例句
After the displacement between the center of the bubble and the scale circle is detected through a revised randomized Hough transform, the scale unit and the sensibility of circular bubble can be obtained.