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. Sound Gate: The gate used in an optical sound head, instead of a sound drum, to keep the film sound track precisely aligned on the scanning beam slit during sound reproduction. 声门：光学声音头上用的片门，代替声鼓，使得胶片的声轨在声音重现过程中正好和扫描狭缝光束精确地排列成一直线。
4. The basic meaning of "sound and emotion" is the emotion contained in "sound" (such as sound, speech, music), which is perfect union of "sound" and "emotion". “声情”的基本含义是指“声音”（如声响、言语、音乐等）所蕴含的情感，是“声”与“情”的完美的结合。
5. The sound intensity level, the sound pressure level, and the index of sound pressure – residual sound intensity level if verified. 检定声强级和声压级测量的偏差和声强仪的声压-残余声强指数。
