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立式螺旋
 立式螺旋
agric. riserauger
| 风洞
 风洞
compr. air channel
hydroel.st. whirl tube
racing wind hole
space air-tunnel; tunnel

to phrases
立式螺旋
agric. riserauger
立式螺旋
: 11 phrases in 5 subjects
Automobiles1
Metallurgy1
Plastics2
Space2
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