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为了解孕期换气功能的变化,探讨其变化规律及原因,我们对不同孕期的189例妇女进行了血气测定,结果见表。
In order to understand the changes of the ventilatory function during pregnancy and to explore its changing rules and causes, we measured blood gases of 189 women during different stages of pregnancy. The results are shown in the table.