| 1. | Random - incidence and diffuse - field calibration of sound level meters
声级计的无规入射和扩散场校准 |
| 2. | Electroacoustics . random - incidence and diffuse - field calibration of soud level meters
电声学.声级计的随机入射和扩散场校准 |
| 3. | For astrometric purposes , dark frame and flat field calibration is recommended
出于天文测量要求，暗场图和平场图校准是被推荐的。 |
| 4. | Electroacoustics - random - incidence and diffuse - field calibration of sound level meters
电声学.声级计的无规定射声场及扩散声场的校正 |
| 5. | Electroacoustics - random incidence and diffuse field calibration of sound level meters
电声学.声级测量仪的随机入射和散射区域的校正 |
| 6. | Electroacoustics - random - incidence and diffuse - field calibration of sound level meters iec 61183 : 1994 ; german version en 61183 : 1994
电声学.声级计无规入射声场及扩散声场校正 |
| 7. | The solution was proven by experiments to be easy , fast , with high precision , and suitable to on - field calibration
通过实验分析验证，该方法简单、快速，且精度较高，适用于传感器的现场标定。 |
| 8. | Measurement microphones - part 3 : primary method for free - field calibration of laboratory standard microphones by the reciprocity technique iec 61094 - 3 : 1995 ; german version en 61094 - 3 : 1995
测量传声器.第3部分:用互易技术对实验室标准传声器进 |
| 9. | Using the system designed in this thesis work , flow field calibration of the wind tunnel is accomplished , which covers dynamic pressure drop coefficient , dynamic pressure time stability , axial static pressure gradient , boundary layer , and degree of turbulence , etc . boundary layer measuring principle and method are especially described in detail , the relationship between boundary layer thickness , wind speed setting , and the depth of the experimental section is summarized , and finally the calibration data for th e model center zone under specific wind speed are given
然后利用本文设计的系统完成了落差系数、动压时间稳定姓、轴向静压梯度、边界层及湍流度等内容的流场校测。特别对边界层测量的原理及方法做了较详尽的叙述，总结出边界层厚度与设定风速、实验段深度的关系，然后给出模型中心区一定风速下校正数值。 |
