| 1. | A corner cube consists of three mutually perpendicular reflecting planes .
角棱镜是由3个互相垂直的反射平面组成。 |
| 2. | Acoustics - determination of sound power levels of noise sources using sound pressure - survey method using an enveloping measurement surface over a reflecting plane
声学声压法测定噪声源声功率级反射面上方采用包络测量表面的简易法 |
| 3. | Acoustics . determination of sound power levels of noise sources using sound prssure . engineering method in an essentially free field over a reflecting plane
声学.使用声压法对噪声源声强级的测定.反射平面上基本无声波场的工程测试法 |
| 4. | Acoustics - determination of sound power levels of noise sources using sound pressure - survey method using an enveloping measurement surface over a reflecting plane
声学.用噪声压力测定噪声功率级.在反射平面上利用包封测量表面的测量法 |
| 5. | Acoustics - determination of sound power levels of noise sources using sound pressure - survey method using an enveloping measurement surface over a reflecting plane
声学.声压法测定噪声源声功率级.对声音反射平面进行曲面包络线测量方法 |
| 6. | Acoustics . determination of sound power levels of noise sources using sound pressure . survey method using an enveloping measurement surface over a reflecting plane
声学.使用声压法对噪声源声强级的测定.在反射平面上利用包封测量表面的测量法 |
| 7. | Acoustics - determination of sound power levels of noise sources using sound pressure - engineering method in an essential free field over a reflecting plane iso 3744 : 1994 ; german version en iso 3744 : 1995
声学.使用声压的噪声源声音强度级的测定.在一个基本 |
| 8. | Acoustics - determination of sound power levels of noise sources using sound pressure - survey method using an enveloping measurement surface over a reflecting plane iso 3746 : 1995 ; german version en iso 3746 : 1995
声学.声压法测定噪音源声功率级.包络面简易测量法 |
| 9. | Acoustics . noise emitted by machinery and equipment . measurement of emission sound pressure levels at a work station and at other specified positions . engineering method in an essentially free field over a reflecting plane
声学.机械和设备排放的噪声.工作站和其它规定场所声压级的测量.反射平面上基本无声波场的工程测试法 |
