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| relief valve; pneumatic relief valve; pressure reduction valve (把流体压力从高压值降低到固定的低压值的装置) | |||
| pressure reducing valve; reducing valve; pressure-reducting valve; pressure-reduction valve | |||
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减压 活 门 : 6 phrases in 2 subjects |
| Space | 4 |
| Technology | 2 |
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