| |||
backward bent vane; backward curved blade | |||
back ward-curved blade | |||
back-swept vane; backward curved vane | |||
backward leaning vane; sweptback blade |
后 弯 叶片 : 17 phrases in 8 subjects |
Architecture | 1 |
Automobiles | 3 |
Ecology | 1 |
Metallurgy | 2 |
Mining | 1 |
Refrigeration | 2 |
Technology | 6 |
Wind Energy | 1 |