| 1. | Effective diameter of bolt or high - strength bolt 螺栓或高强度螺栓有效直径57 |
| 2. | Aerospace ; spotlights with 134 mm effective diameter 航空和航天.有效直径为134mm的聚光灯 |
| 3. | Aerospace ; spotlights with 100 mm effective diameter 航空和航天.有效直径为100mm的聚光灯 |
| 4. | Effective diameter of voids 有效孔隙粒径 |
| 5. | Effective diameter of thread 螺纹中径 |
| 6. | Effective diameter of pipe 有效管径 |
| 7. | The axial forces are related to oil supply pressure , and also to the square of rotary speed and the fourth power of effective diameter of circular circle 轴向力除了与供油压力有关外,主要是与泵轮转速的二次方和循环圆有效直径的四次方有关。 |