环形孔 meaning in Chinese
cvircular port
looping pit
ring-shaped aperture
Examples
- Road vehicles - measurement of scattered light of safety glazing materials for vehicle glazing - part 1 : annular diaphragm method
道路车辆.汽车安全玻璃光散射测定.第1部分:环形孔板
cvircular port
looping pit
ring-shaped aperture