frictional connection
摩擦连接
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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.
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。
youdao
应用推荐
模块上移
模块下移
不移动