管道阻力: duct losspipe resistancepipeline resistanceresistance of ductingresistance through passage
Example Sentences:
1.
Carrier roller bearing and the engine in coal mine bearing have life is elder obstruction is little it is low to consume energy provide against checking the life and the revolving obstruction is separately the ordinary bearing 10 - fold and 50 % 矿车轮对、托辊专用轴承及矿车轴承具有寿命长、阻力小、耗能低等特点，防卡寿命和旋转阻力分别是普通轴承的10倍和50 % 。
