1. Sound pressure measurement, sound intensity measurement, sound power measurement, time field wave display, instantaneous sound power measurement and sound field indicator measurement. 声强测量、声压测量、声功率测量、时域示波、短/瞬时声功率测量和声场指示值测量。
2. Sound pressure measurement, sound intensity measurement, sound power measurement, time field wave display, instantaneous sound power measurement and sound field indicator measurement. 声强测量、声压测量、声功率测量、时域示波、短/瞬时声功率测量和声场指示值测量。
3. Primarily concerned with controlling the measurement of project types, topography, line measurement, deformation measurement and geographical information system measurement of results. 项目类型主要涉及控制测量、地形测量、线路测量、变形测量及地理信息系统等测量成果。
4. Primarily concerned with controlling the measurement of project types, topography, line measurement, deformation measurement and geographical information system measurement of results. 项目类型主要涉及控制测量、地形测量、线路测量、变形测量及地理信息系统等测量成果。
5. The measurement of different standard reference materials shows that the method can get good results and the relative standard deviations are within the range of the national standard. 通过对不同标准样品进行测量，其测量结果与标准值相符，均在国家标准允许误差范围内。
网络释义
Chapter II Datum Instruments of Measurement and Standard Instruments of Measurement 第二章 计量基准器具和计量标准器具;
Atlantic standard time acific Standard Time acific standard time 太平洋标准时;
Atlantic standard time acific Standard Time acific standard time 太平洋标准时;
Instruments for the measurement of sound intensity-measurement with pairs of pressure sensing microphones 声强测量仪 用声压传声器对测量;
Methods of measurement for satellite television earthreceive-only station-Door-out unit measurement 卫星电视地球接收站测量方法 室外单元测量;
