谢谢，是什么制的？合成革的还是皮的？

Thank you. What are they made of? Are they synthetic or leather?

youdao

采用本实验确定的工艺，制得蟾皮总二烯内酯含量为53.90%，收率为0.23%。

The content of total bufadienolides was 53.90%, the extracting rate was 0.23%.

youdao

采用本实验确定的工艺，制得蟾皮总二烯内酯含量为53.90%，收率为0.23%。

The content of total bufadienolides was 53.90%, the extracting rate was 0.23%.

youdao