编者：《任强、液体的压强》是物理学中的重要概念，在科学技术和生产、生活中经常用到；也是中考的热点之一．本章又是初中物理中较难学的内容之一，主要是综合性强，要求运用到前面学过的密度、质量、重力、二力平衡等知识；再加上比较抽象，所以要求有较高的想象力和抽象思 Editor: “Ren Qiang, the pressure of the liquid” is an important concept in physics, often used in science and technology and production, life; also one of the hottest topics in the exam. This chapter is also one of the more difficult subjects to learn in junior middle school physics. It is mainly comprehensive and requires the use of knowledge of density, quality, gravity, and force balance that have been learned in the past; coupled with a relatively abstract, it requires a higher level of knowledge. Imagination and abstract thinking