coumarins的精选

用“coumarins”造句大全，coumarins造句

2018-01-08

MethodsThecontentofthetotalcoumarinswasdeterminedbyUVspectrophotometry.ResultsTheoptimaldetectivewavelengthwas320nmforthetotalcoumarins.Intheprocessofcuttingup,"washingclean"and"moistening"influen...

coumarins的精选

用“coumarins”造句大全，coumarins造句

如图所示，一质量为m的物块恰好沿着倾角为的斜面匀速下滑。现对物块施加一个竖直向下的恒力F。则物块（） ...

筲成语有哪些

用“带岁”造句大全，带岁造句

______clevertheboyis! A．How ...

用“docile and obedient”造句大全，docile and obedient造句