frictional unemployment
【机械工程】摩擦联轴节 （离合器）【物理】摩擦连接（离合器）
frictional coupling (clutch)
暂无补充释义。
相关词条
form-locking connection, strength connection, frictional connection
frictional
frictional connection
friction【力】;friction force【力】;frictional force【力】
frictional drive
frictional resistance
frictional loss