“丁烯”造句

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 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.

其他合适的蜡类型和bisamide顺丁烯二酸酐改性蜡.
Other suitable types of wax are maleic anhydride and bisamide modified wax.

• #丁烯