最大允许压差Δpc  critical pressure drop for sizing

允许压力偏差  permissible derivation

测量允许差  Alkalinity

化学分析允许差  allow difference in chemical analysis

化学分析允许差规范  application range of allowance difference in chemical analysis

极限允许压力  alarm pressure

母线允许压降  Generatrix permission pressure drop

限差（允差）  Tolerance

允许压力  admission pressure; maximum permissible pressure

允许压力降  allowable pressure drop

允许压力损失  correlations press drop

最大允许压力  maximum permissible pressure

最大允许压力降  maximum allowed presure drop

最低允许压力  minimum permissible pressure

最高允许压力  maximum allowable pressure

风压差压保护  differential pressure protection of compressed air pressure

油压压差控制器  oil pressure differential controller

2 允许停留 延长 ，不必匆忙。  Zeit lassen

包壳运行允许减薄量  cladding wastage allowance