3.形成虹吸現象的條件是水管內裝滿水,並且出水口要低於水面。
Notes

補充資料:
https://www.youtube.com/watch?v=R6bxbGR2bks&list=PL7zP71Dtd2JERsmJLM3oY-QHU4MHuW_o8&index=3
https://www.youtube.com/watch?v=e9qX4o4Tbdc&list=PL7zP71Dtd2JERsmJLM3oY-QHU4MHuW_o8&index=9
https://www.youtube.com/watch?v=xoqkOpCWCrY&list=PL7zP71Dtd2JERsmJLM3oY-QHU4MHuW_o8&index=13