B ：Clean the mortar tanks, change seals on erector and do weekly maintenance.
Inset: the erector spine muscles lift the torso and the rhomboid draw the scapulae towards the midline.
Surgical treatment of extreme lateral lumbar intervertebral disc herniation through the transverse process and erector muscle of spine
One-stage anterior debridement,allografts and inter fixation for tuberculosis of thoracolumber vertebrae between erector spine muscles and quadratus lumborum muscles.
25 i am a mechanician.(electrician, pipelayer,welder, carpenter, turner, blacksmith, builder, erector, riveter,rigger, concrete worker, engine-driver,repair worker).
This erector integrates the conveying, hoisting and installing of the bridges to ensure the bridge erecting operation is efficient and safe.
