vertebral plate tractor椎: vertebra板: board; plank; plate牵引器: tractor椎板牵开器: laminectomy retractor颈椎板牵开器: cervical disc retractor下载手机词典可随时随地查词查翻译关注微信公众号：chachacidian，回复:椎板牵引器，即可在微信中查询翻译
