center of tip leakage vortex
rotor tip leakage vortex
scrapped tip leakage vortex
blade tip check and relief valve
blade tip clearance
叶尖与船体的间隙
叶顶间隙
叶尖间隙
叶端余隙
叶顶间隙叶梢间隙
叶顶间隙流
blade tip clearance [= tip clearance]
blade tip clearance measurement
blade tip control lever