成人做爰免费视频免费看_成人a级高清视频在线观看,成人a大片在线观看,成人a大片高清在线观看,成人av在线播放,一a一级片,一级黄 中国色 片,一级黄 色蝶 片,一级黄色 片生活片

Ultrasonic levitation of some small living animals such as ant, ladybug, and young fish has been achieved with a single-axis acoustic levitator. The vitality of ant and ladybug is not evidently influenced during the acoustic levitation, whereas that of the young fish is reduced because of the inadequacy of water supply. Numerical analysis shows that the sound pressures on the ladybug’s surface almost reach the incident pressure amplitude p₀ due to sound scattering. It is estimated that 99.98% of the acoustic energy is reflected away from the ladybug. The acoustic radiation pressure p_a on the ladybug’s surface is only 1%–3% of p₀ , which plays a compression role on the central region and a suction role on the peripheral region.

提供商	北京東方德菲儀器有限公司	下載次數(shù)	98次
資料大小	575.6KB	資料類型	PDF 文件 免費下載該資料
資料圖片	--	瀏覽次數(shù)	645次