| 1. | Efficiency exponent approaches to 0 ~ 1
效率切割指数大约在0 1之间。 |
| 2. | When viscosity is less than 188cst , the exponent closes to 2 . 8 ~ 3
当粘度小于188cst时，各个叶轮的轴功率切割指数趋于定值2 . 8 3 。 |
| 3. | [ 8 ] flow rate exponent of the impeller for the different number of blades approaches to 1
( 8 )不同叶片数叶轮的流量切割指数大体上趋于定值，约为1 。 |
| 4. | [ 4 ] the trim exponents vary with the fluid viscosity and impeller diameter ratio at same time
( 4 )切割指数同时随着切割后的直径比和液体粘度变化而变化。 |
| 5. | [ 6 ] head exponent of the impeller for the various number of blades changes when viscosity increases
( 6 )随着粘度的增大，不同叶片数的叶轮扬程切割指数发生变化。 |
| 6. | [ 7 ] power exponent of the impeller for the different number of blades changes when viscosity increases
( 7 )随着粘度的增大，不同叶片数的叶轮轴功率切割指数趋于定值。 |
| 7. | When viscosity is less than 188cst , head exponent approaches to 2 . when viscosity more than this value , the exponent closes to 2 . 5
当粘度小于188cst时，扬程切割指数趋于2 ；当粘度大于188cst后，扬程切割指数趋于2 . 5 。 |
| 8. | [ 3 ] the greatest error is 50 % between the result given by the affinity law of u . s . a and that calculated by using the trim law issued in this work
( 3 )发现在输送水时美国的叶轮切割定律计算结果与本文相差最大为50 。按美国的切割指数用于离心油泵叶轮切割，误差比较大。 |
