| 1. | Trapezoidal channel of reinstated slope at ngau kok wan
在牛角湾的复原斜坡中的梯形雨水渠 |
| 2. | Construction of trapezoidal channel and u - channel at ch2130
于2130里程距离兴建梯形渠及u渠 |
| 3. | Construction of trapezoidal channel as a part of temporary drain at zone f
于f区建造梯形渠作为部份临时排水系统 |
| 4. | Construction of trapezoidal channel as part of the temporary drain at zone 2
于2区建造梯形渠作为部份临时排水系统 |
| 5. | Direct formula calculating critical depth for open trapezoidal channel with spherical bed
弧底梯形明渠临界水深的直接算法 |
| 6. | Construction of trapezoidal channel as a part of temporary drain at zone b and c
于b区及c区建造梯形渠作为部份临时排水系统 |
| 7. | The formulas and calculation method for the practical and economical cross - section of the trapezoidal channel with an arc slope angle are briefly presented
摘要简单介绍了弧形坡脚梯形渠道实用经济断面的计算式和计算方法。 |
