polysulphide rubber聚硫橡胶
Barium polysulphide多硫化钡
polysulphide sealant多硫化物密封剂;多硫化物密封胶
sodium polysulphide多硫化钠
Ammonium polysulphide多硫化铵
polysulphide slealant聚硫密封膏
polysulphide synthetic rubber聚硫合成橡胶
Ammonium polysulphide solution多硫化铵溶液
potassium polysulphide ointment多硫化钾软膏
N（名词） any sulphide of a metal containing divalent anions in which there are chains of sulphur atoms, as in the polysulphides of sodium, Na2S2, Na2S3, Na2S4, etc 多硫化物