Treatment of postoperation tibial nonunion with external skeletal fixation .
骨外固定加压治疗胫骨术后骨不连的疗效。
Bone grafting and internal fixation for nonunion of humeral shaft .
肱骨干骨折不愈合植骨内固定术。
That act gives workers a federally protected right to form unions , and it prohibits employers from punishing workers - whether union or nonunion - for discussing working conditions or unionization .
