含有两个碳碳双键的碳氢化合物称为二烯烃13 丁二烯ch2=ch Ch=ch2是最典型的二烯烃13 丁二烯与hcl按物质的量1∶1 Template




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tomski含有两个碳碳双键的碳氢化合物称为二烯烃13 丁二烯ch2=ch ch=ch2是最典型的二烯烃13 coloring