| 摘要 |
medicine, particularly, measurement of peak expiratory flow. SUBSTANCE: meter has indicator and one or groups of holes made so that indicator ensures logarithmic character of measurement of value of peak expiratory flow. Peak expiratory flow meter adjusted for measurement of low and high levels of expiratory flow is offered too. EFFECT: accurate information on value of peak expiratory flow, simple operation and adjustment due to improved design of apparatus. 20 cl, 23 dwg |
