牵正散 qianzheng powder ; qianzheng

牵正散临床新用举隅 Forum On Traditional Chinese Medicine

正牵引 positive drag ; normal draw ; [农机] normal traction

正畸牵引 orthodontic traction ; Led by the orthodontics

正向逆牵引 positive dip reversal

我正牵着你的手 I'm holding your hand

牙正畸牵引 Orthodontic Extrusion

机车正常牵引总重 [铁路] normal load of locomotive

正常牵引能量 normal tractive capacity