ring-shaped rotor环形转子
ring-shaped structures环形构造
ring-shaped metal环形件
ring-shaped switch环形开关
ring-shaped polymer大环高分子
ring-shaped blanks环形毛坯
ring-shaped preform环形预形坯
ring-shaped belt环形带
ring-shaped top环形顶蓬
同义词：annularannulateannulatedcircinatecircularringeddoughnut-shaped