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| air blowing system; pressure system | |||
| blast system; up-draught system; updraught system | |||
| air blow system; blower system | |||
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鼓 风 系统 : 8 phrases in 4 subjects |
| Agriculture | 1 |
| General | 1 |
| Metallurgy | 4 |
| Technology | 2 |
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