支具治疗青少年特发性脊柱侧弯的护理。
Nursing Care of Patients with Adolescent Idiopathic Scoliosis Treated with Braces.
青少年特发性脊柱侧弯支具治疗的效能存在争议，有效性仍未得到证实。
Background The efficacy of brace treatment for patients with adolescent idiopathic scoliosis remains controversial, and effectiveness remains unproven.
螺杆钻具是其中的一项关键技术，其主要目的是研制满足侧钻中短半径水平井需要的小尺寸高造斜率的弯外壳螺杆钻具。
Small size bent housing screw drill with high build rate must be developed to meet the requirements of sidetracking the short to medium radius horizontal well.
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