But its weak dampproofing requires that a special ventilated system and dampness damping system must be available, otherwise it could lose its functions due to erosive penetration.
但其不耐潮的特性则必需配用特别的屋面通风排潮系统，否则可能被腐蚀穿透而失去使用功能。
2
The IBM (Shanghai) chip coating workshop 'requirement for waterproofing and damp-proofing is very high.
上海IBM芯片封装生产基地厂房的防水、防潮要求很高。
3
Damp and mildew proofing: penetrate deep into the leather and work effectively in preventing mildew.