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conic shell
 conic shell
tech. 圆锥 壳; 锥形筒体; 锥形壳
| reducer section
 reducer section
oil 变径段; 缩径段

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conic shell

tech. 圆锥; 锥形筒体; 锥形壳 (体)
conic shell
: 7 phrases in 1 subject
Technology7

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