polysulphide sealant 多硫化物密封剂 ; 多硫化物密封胶
polysulphide rubber 聚硫橡胶
sodium polysulphide 多硫化钠
Barium polysulphide 多硫化钡
Ammonium polysulphide solution 多硫化铵溶液
polysulphide synthetic rubber 聚硫合成橡胶
polysulphide rubber compound 硫合橡胶化合物
N 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
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