The ratio between the dia-meter of vertebral canal and that of duramater capsule in the sagittal directionis 1 to 0.73 at the cervical segment level, 1 to 0.68 at the thoracic segmentlevel and 1 to 0.60 at the lumbar segment level.是什么意思_The ratio between the dia-meter of vertebral canal and that of duramater capsule in the sagittal directionis 1 to 0.73 at the cervical segment level, 1 to 0.68 at the thoracic segmentlevel and 1 to 0.60 at the lumbar segment level.在线翻译_英语_读音_用法_例句