铸膜液配方相同，添加剂浓度增大时，制得超滤膜的厚度增大，过滤通量增大、截留率降低。
With the same cast solution composition, increasing additive concentration would increase the thickness of membranes and lead to higher permeability and lower rejection.
问题：在典型的柴油曲柄箱机油中，添加剂的浓度一般是多少？
Question: What concentration of additives might be found in typical diesel engine crankcase oil?
通过对比实验考察了添加剂的浓度和洗消时间对其洗消效率的影响，并对雾滴粒径进行了测量。
The effects of the concentration of additives and decontaminating time on the efficiency together with the size of the water mist were experimentally researched.
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