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| 碟形活门; 阻油板; 蝶形阀门 | |||
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| 阀盘; 阀碟; 气门盘阀盘阀碟; 活门板; 活门座; 阀头; 阀座 | |||
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тарелка-клапан : 9 phrases in 3 subjects |
| General | 5 |
| Oil processing plants | 1 |
| Technology | 3 |
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