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varying pitch | |||
variable pitch | |||
adjustable-pitch | |||
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variable pitch | |||
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variable distance along helical channel |
变螺距: 39 phrases in 9 subjects |
Aviation | 5 |
General | 1 |
Mechanic engineering | 3 |
Mechanics | 2 |
Nautical | 3 |
Oil / petroleum | 1 |
Plastics | 4 |
Technology | 19 |
Wind Energy | 1 |