节约型双相不锈钢
lean duplex stainless steel
髌股关节不稳定症
Patellofemoral instability
不约而同
Anaerobic-sediment-SBR
take the same action or view without prior consultation
happen to coincide
房室不节
Excess sexual of intercourse
关节不稳
instability
Joint instability
instability of atlantoaxial joint