Heartburn also know as acid reflux is caused by progesterone relaxing the valveseparating the esophagus from the stomach allowing acids to seep up the pipe.
胃灼热，同时也被叫做胃酸倒流，这是因为黄体酮使瓣膜松弛把食道和胃分开了，这会让胃酸渗到食管里。
2
Heartburn, also know as acid reflux, is caused by progesterone relaxing the valveseparating the esophagus from the stomach, allowing acids to seep up the pipe.
胃灼热，同时也被叫做胃酸倒流，这是因为黄体酮使瓣膜松弛把食道和胃分开了，这会让胃酸渗到食管里。
3
When separating components or detecting concentrations, the sampling valve is set to allow the gas (liquid) to be measured to flow through the sample column.