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调查受超过容许强度的机械和声学振动作用3～20年的冶金工人281例,其中156例受局部及全身振动作用,有43例受噪声作用,82例则受噪声和振动的联合作用。
281 metallurgical workers surveyed for mechanical and acoustic vibrations exceeding allowable mechanical strength for 3 to 20 years, 156 of whom were affected by local and systemic vibration, 43 with noise and 82 with noise and vibration.