flat bell cover-shaped combustion chamber扁钟罩型涡流燃烧室
bell-shaped curve[数] 钟形曲线;钟型曲线;常态曲线
Bell-shaped bowl仰钟式碗
bell-shaped dome钟形穹窿顶
Bell-shaped Things铃
bell-shaped hypothesis钟型假说
bell-shaped rotor钟形转子
bell-shaped cup铃铛杯
bell-shaped format钟罩式结构