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在学习《流体压强与流速的关系》时,同学们遇到了这样一道课外习题:“如图1所示,把一个 T 字形三通管置于盛有水的烧杯的上方,当从管的 A 端用力吹
When studying the relationship between fluid pressure and flow velocity, the students encountered such an extracurricular exercise: ”As shown in Figure 1, a T-shaped tee was placed over the beaker containing water. A end blows hard