1. The shock reflection type on the wedges of 50 is regular reflection and the shock reflection type on the wedges of 35 is Mach reflection. 平面震波于50度斜面上的反射型态为正规反射，而在35度斜面上之反射型态为马赫反射。
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 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。
4. 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。
5. We analyze the character sties on reflection and phenomena of reflection with big-angle in cross well seismic data by basic theory of reflection. 对井间地震反射波的性质进行了讨论和分析。给出了反射波的基本性质，讨论了反射波系数与入射角的关系；
