------------------------------------------------------------------------------------------------相对粘度的概念--------------------------------------------------------------------------------------------------------
相对粘度又称条件粘度,它是按一定的测量条件制定的。根据测量的方法不同,可分为恩氏粘度°E、赛氏粘度SSU、雷氏粘度Re等。我国和德国等国家采用恩氏粘度。
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