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在初中物理学习中,常会遇到以下两类问题_______ 题1 用自来水笔吸墨水时,把笔上的弹簧片按下后松开,墨水就会被吸进橡皮管里去,你能解释其中的道理吗?
In the junior high school physics study, you often encounter the following two types of problems _______ Question 1 When you use the fountain pen to suck ink, press the spring on the pen and release it. The ink will be sucked into the rubber tube. You can explain Is there a truth?