|5.188.211.35|5.188.211.35\cさん＆Michel|I like it a lot http://xxxnx.fun/difloratio/ libidine nella villa del guardone "The platforms emit sound waves which move upward until they reach surface lying above where they bounce back. When the downward-moving reflected waves overlap with the upward-moving source waves the two 'cancel out' in the middle at so-called node points. Objects placed there remain stuck in place because of the pressure of sound waves coming from both directions" Nature wrote. さんの一首