optional performance meaning in English
适当的绩效
Examples
- Ventilation for buildings - components products for residential ventilation - required and optional performance characteristics
建筑物通风.住宅通风用部件产品.必须的和可选的性能特征 - Ventilation for buildings - components products for residential ventilation - required and optional performance characteristics
建筑物通风.住宅通风用组件产品.要求的和可选的性能特征 - Ventilation for buildings - components products for residential ventilation - required and optional performance characteristics ; german version en 13142 : 2004
建筑物的通风.住宅用通风组件产品.必须和可选的性能