Low Solubility-Low Permeability第四类低溶解性

low carbon-low alloy低碳低合金

Low Warmth-Low Competence力群体

Low Sulphur-low copper magnetite低硫低铜磁铁矿

low ultra-low carbon bainite steel低碳贝氏体钢

low cholesterol-low saturated fat diet低胆固醇;低饱和脂肪饮食

low voltage-low frequency break apparatus低压低周解列装置

low frequency-low voltage protection低频低压保护

low-low alarm低低值报警