在学校环境中学习，特别是书写，除阿拉伯语外，左利手学生的书写难度均高于右利手，左手书写须较右手书写更处于强制脊柱后凸的体位，从而促进脊柱异常姿势的发展。为对正在生长发育的青少年进行定群研究，本文就是其中的一个组成部分所涉及到的脊柱的外型是通过绘图仪测定的 Studying in the school environment, especially in writing, except for Arabic, the students in Zuoli College are more difficult to write than those in Zuoyingli and the left hand is more in the position of forced kyphosis than in the right hand, so as to promote abnormal posture of the spine development of. For the purposes of population-based studies of adolescent growth and development, this article is one of the components involved in the spine appearance is measured by a plotter