◎ 回弯 [back bending] 某些稀土核在自旋为20方(方为普朗克常数除以2π)附近出现的转动能级的不连续性,表现在以转动惯量对转动圆频率的平方所描绘的曲线的向后弯转上
将回弯头分解为直管段和回弯两部分。
回弯压力降除考虑回弯头的局部阻力外，还包括相连直管段受回弯影响而增加的压力降。
The additional frictional pressure drop for vertical tubes due to its connection with the bend was accounted into the frictional component due to return flow.
感受亲近的故土，连着朴素的街坊邻居，擦肩而过的招呼声一转眼已转了好几个弯，回传了亲切的问候声。
Feel close to their native land, attached simple neighbors, pass by to say hello sound a blink of an eye had been transferred to several bends, return the cordial greetings.
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