| 1. | This is the most convenient reference level for most electrostatic problems .
对大多数的静电问题来说，这是最方便的参考点。 |
| 2. | This fixture should be provided with a reference leveling surface, so that it can be kept level as the balance deflects .
这种装置应该有一个水平基准面，以便在天平变形时能够使之保持水平。 |
| 3. | Reference levels for narrow - band masking noise
窄带掩蔽噪声的基准级 |
| 4. | Accuracy reference level : 2 db
精度参考电平 |
| 5. | " are the reference levels determined in advance taking into consideration of the above factors
就是考虑了这些因素而预先制定的参考剂量水平。 |
| 6. | " are the reference levels determined in advance taking into consideration of the above factors
就是考虑了这些因素而预先制定的参考剂量水平。 |
| 7. | Acoustics - reference zero for the calibration of audiometric equipment - reference levels for narrow - band masking noise
声学.测听设备的校准参照区.掩蔽噪声的参考等级 |
| 8. | The height of a thing above a reference level , especially above sea level or above the earth ' s surface
高度；海拔在某个参考平面，特别是海平面或地面以上一个物体的高度 |
| 9. | Acoustics - reference zero for the calibration of audiometric equipment - part 4 : reference levels for narrow - band masking noise
声学校准测听设备的基准零级第4部分：窄带掩蔽噪声的基准级 |
| 10. | Acoustics . reference zero for the calibration of audiometric equipment . part 4 : reference levels for narrow - band masking noise
声学.听力测定仪器的校准用基准0 .第4部分:窄频带遮蔽噪声的基准级 |
