单词	phosphorus heptasulfide
释义	phosphorus heptasulfide noun phosphorus hep·​ta·​sulfide -¦heptə+ : a yellow crystalline compound P4S7 made by heating a mixture of phosphorus and sulfur in a ratio of about 4 to 7 equivalents, regarded formerly as a trisulfide, and used chiefly in the synthesis of organic sulfur compounds (as thiophene); tetra-phosphorus heptasulfide Word History Etymology heptasulfide from hepta- + sulfide
随便看	processable processed processed butter processed cheese processer processers processes processibilities processibility processible processing procession procession flower procession moth processional processional moth processionally processionals processionary processionary caterpillar processionary moth processioned processioner processioners processioning

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