system of drilling fluids 基本例句 钻井液体系 The advantages of new generation SBM are introduced.对新一代合成基钻井液体系的优点作了介绍。 Circulating micro-foam drilling fluid is a newly developed low density drilling fluid system in recent years.可循环微泡沫钻井液是近年国内外推出的一种新型低密度钻井液体系。