butene造句
Duplication of bands in this region is also shown by trifluoropropyne and perfluoro 2 -
butene.
三氟丙炔和全氟丁烯 -2 在这个区域也出现双重谱带.
Duplication of bands in this region also shown by trifluoropropyne and perfluoro 2 -
butene.
三氟丙炔和全氟丁烯 -2 在这个区域也出现双重谱带.
The mass fraction of n -
butene in mixed C 4 from catalytic cracking after etherized was approximately 40 %.
醚化后的催化裂化混合C4中含有质量分数约为40%的正丁烯,是生产丙烯的优质原料.