用硫磺处理
sulfur dioxide,二氧化硫
sulfur content,含硫量,硫分;硫含量
total sulfur,全硫
sulfur trioxide,三氧化硫(等于sulphur trioxide)
elemental sulfur,元素硫
sulfur hexafluoride,[化]六氟化硫
sulfur oxide,氧化硫
sulfur acid,含硫酸
sulfur cycle,硫循环