AnalyzerSentence analysis3SpansSentenceオレフィン系炭化水素1000 character limitAnalyzeSentenceオレフィン系けい炭たん化か水すい素そSpan Detailsオレフィンolefin; alkenenoun系けいsystem; lineage; group; corollary; geological system; taxonomic seriesnoun, noun suffix炭たん化か水すい素そhydrocarbonnoun
