上半身应保持颈部直立,使头部获得支撑,两肩自然下垂,上臂贴近身体,手肘弯曲呈90度,操作键盘或鼠标,尽量使手腕保持水平姿势,手掌中线与前臂中线应保持直线。下半身腰部挺直,膝盖自然弯曲呈90度,并维持双脚着地的坐姿。必须选择符合人体工学设计的桌椅,使用专用的电脑椅,坐在上 The upper body should keep the neck upright, so that the head is supported, shoulders naturally drooping, upper arm close to the body, elbows bent at 90 degrees, keyboard or mouse, try to keep the wrist horizontal position, palm midline and forearm midline should maintain a straight line. Lower body straight waist, knees bent naturally 90 degrees, and to maintain feet sitting posture. Must choose ergonomically designed tables and chairs, using a dedicated computer chair, sitting on