 |
| |||
| 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 | |||
| |||
| 瓣〔舌，止回，翻板〕阀 | |||
| flap valve: 19 phrases in 6 subjects |
| Automobiles | 1 |
| Chemistry | 1 |
| Compressors | 1 |
| Ecology | 1 |
| Hydroelectric power stations | 2 |
| Technology | 13 |