| 1. | The shaft and discs rotate at about forty revolutions per second .
竖轴和磁盘每秒钟大约旋转40转。 |
| 2. | The horizontal axis represents temperature
竖轴表示温度。 |
| 3. | Vertical - shaft windlass
竖轴起锚机 |
| 4. | The vertical axis of the chart represents the value of the series , and the horizontal axis represents time
图表的竖轴表示时序值，横轴表示时间。 |
| 5. | Z test conditions for machining centres - part 2 : geometric tests for machines with vertical spindle or universal heads with vertical primary rotary axis vertical z - axis
多工序自动数控机床加工中心的试验条件.第2部分:有竖轴或带垂直主旋转轴 |
| 6. | All of these is the important base of the selecting of turbines , the designing of hydrodynamics performance , and the general designing of marine currents power plant
首先分析了竖轴可调角直叶水轮机水动力性能计算的基本公式，介绍了诱导速度的两类计算方法。 |
| 7. | And we analyzed the effect of the big gun erect axis incline trunnion axis is out of the vertical of the erect axis and the big gun axis is out of the vertical of the erect axis to measuring accuracy
对矢量转轴公式进行了推导，并利用它计算出了火炮竖轴倾斜、炮耳轴与竖轴不垂直、炮膛轴线和炮耳轴不垂直三种误差对测量精度的影响。 |
| 8. | At last with the prototype of the vertical - axis cycloid turbine , the optimal method and its mathematical model based on conjugate gradient method are presented in order to enhance the energy conversion coefficient . such optimal results as the energy conversion and the relation between attack angle and azimuth angle are given with particular analysis to sum up the reason of the improved performance of the turbine
最后以竖轴直叶摆线式水轮机为优化原型，提出了一种水轮机水动力性能的优化计算方法，建立了数学模型，运用共轭梯度法进行优化设计，以提高水轮机的能量利用率为目标，给出了优化的叶片攻角变化规律、能量利用率结果，探讨了能量利用率提高的原因。 |
| 9. | A hydrodynamic optimal method to enhance the energy conversion coefficient of the vertical - axis variable - pitch turbine is presented in this paper based on the analysis of the existing mathematical models , on the computational methods for predicting the hydrodynamic performance of turbines and on the available experimental results . by applying mathematical optimal theory , a mathematical model for optimizing the hydrodynamic attack angle of the blades of turbines is formulated and some numerical results are obtained as well
本文在总结和研究竖轴可调角直叶水轮机水动力性能计算的现有数学模型，计算方法和实验结果的基础上，运用最优化理论，给出了改善和提高该种水轮机能量利用率的一种优化方法，建立了数学模型，并得到了计算结果。 |
| 10. | Then as a typical example some results drawn by using the introduced methods of the vertical - axis cycloid turbine are given and compared with the experimental data . the purpose is focus on the validation of the introduced methods what are the foundations of the hydrodynamic performance calculation and the optimal method
然后以竖轴可调角直叶摆线式水轮机为例，计算了这种水轮机的各种水动力性能，给出了数值计算结果，对各种方法进行了分析并与已有的试验结果进行了比较和研究，从而检验了各种理论计算方法的优缺点和可靠性。 |
