KS R ISO 4548-4-2007(2017) 试验方法用于全流式机油滤清器用于内燃发动机的第4部分:初始颗粒截留效率 寿命和累积效率(重量法)
Methods of test for full-flow lubricating oil filters for internal combustion engines-Part 4:Initial particle retention efficiency, life and cumulative efficiency(gravimetric method)