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通过工作记录和分析计算器(TRAC)记录卡车司机负重和不负重时的工作姿势和动作,评价工作姿势和动作与肌肉骨骼疾患间的关系,并通过修正观察变量达到预期的可靠性标
Through the working record and analysis calculator (TRAC) record truck driver load and weight-bearing work posture and movements, evaluation of work posture and motion and musculoskeletal disorders, and by modifying the observation variables to achieve the desired reliability