Equipment for abatement of water pollution by oils . pumping means . test methods for performance assessment 消除水被油类污染用的设备.抽吸法.性能评定用的试验方法
Insulation coordination for equipment within low - voltage systems - use of coating , potting or moulding for protection against pollution 低压系统内设备的绝缘配合.防污染用涂覆灌封和模压的应用
Insulation coordination for equipment within low - voltage systems - part : use of coating , potting or moulding for protection against pollution 低压系统内设备的绝缘配合.第3部分:防污染用涂层封装或模压的使用
Insulation coordination for equipment within low - voltage systems - part 3 : use of coatings , potting or moulding for protection against pollution 低压系统内设备的绝缘配合.第3部分:防污染用铸封或压模涂层的使用