180 helix blade with mid-split
Blade with A Damper Platform
blade with concave surface
blade with external fir-tree root
blade with external inverted-T-root
blade with external T-root
blade with peculiar twist angle
blade with reinforced root
blade with stepped root
blade with straddle root
Cylindrical Blade with Involutes Contour
integral blade stabilizer
integral blade type stabilizer
modulation with blade passage frequency
non-magnetic integral blade stabilizer
infinite integral with parameter
metro open-cut tunnel with integral lining
PID with integral separation