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瓣〔舌,止回,翻板〕阀 | |||
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舌阀 | |||
片状止回阀 | |||
翻板式活门; 瓣状活门 | |||
舌簧阀; 辨阀; 舌形阀; 翻板阀 | |||
片状阀 | |||
止回阀; 球门自动阀 | |||
瓣阀 | |||
片阀舌阀,瓣阀,止回阀 | |||
平板阀 (门); 片状阀; 闪动阀; 活形阀; 瓣〔止回,舌形,翻板,球门自动〕阀 | |||
片阀 |
flap-valve: 19 phrases in 6 subjects |
Automobiles | 1 |
Chemistry | 1 |
Compressors | 1 |
Ecology | 1 |
Hydroelectric power stations | 2 |
Technology | 13 |