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鼓形滚柱
 鼓形滚柱
wind. barrel roller
| 轴承
 轴承
bridg.constr. axle bearing
hydroel.st. bearing; shaft bearing; axis bearing
met. metal
steel. bear; bearing plate

to phrases
鼓形滚柱
wind. barrel roller
鼓形滚柱
: 4 phrases in 3 subjects
Oil / petroleum1
Technology1
Wind Energy2