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secondary air inlet
 secondary air inlet
auto. 辅助空气进口
| pipe
 pipe
gen. 烟斗
hydroel.st. 管道
oil transp.
roll. 重皮
space 导管; 装管子
steel. 缩管; 缩孔

to phrases
secondary air inlet
auto. 进气系统辅助空气进口
secondary air inlet
: 1 phrase in 1 subject
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