DIN EN ISO 20844-2015 石油及其相关产品.利用柴油喷射器嘴测定含聚合物油的剪切稳定性(ISO 20844-2015);德文版本EN ISO 20844-2015
Petroleum and related products - Determination of the shear stability of polymer-containing oils using a diesel injector nozzle (ISO 20844:2015); German version EN ISO 20844:2015