“烯”造句
2024年07月03日 15:32:43
烯空氣跟空氣十分近似.
Olefin gas closely approximates air.
所有的主要難點(diǎn)都涌現(xiàn)在
烯酮 ( 1 ) 的合成中.
All the chief difficulties crop up in the synthesis of the enone ( 1 ).
某碳?xì)浠衔镆阎赡苁?strong>烯烴或是烷烴.
A hydrocarbon was known to be either an alkene or alkane.