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| 阻流作用; 单流作用 | |||
| 阻挡作用 | |||
| 门窗的制动作用; 检验行动 | |||
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check action : 22 phrases in 10 subjects |
| Aviation | 5 |
| Business | 1 |
| Commerce | 1 |
| Earth sciences | 2 |
| Economy | 2 |
| Electronics | 1 |
| Project management | 1 |
| Quality control and standards | 2 |
| Securities | 1 |
| Technology | 6 |
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