Heartburn also know as acid reflux is caused by progesterone relaxing the valve separating 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。
Heartburn, also know as acid reflux, is caused by progesterone relaxing the valve separating 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。
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.
当分离组分或检测浓度时，设置采样阀以允许测量气体(液体)流过样品柱。当采样时，采样阀将待测量的气体(液体)引导到载气上的柱。
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