可触诊出幽门是增厚的肌肉环。
The pylorus may be palpated as a thick ring of muscle .
youdao
最后通过霍夫曼降解，合成出环丙胺，得率为84.7%。
The yield of the last reaction was 84.7%.
应用推荐
模块上移
模块下移
不移动