calving fever是什么意思

用法例句

in order to clarify the relationship between the activities of rat gastric branches of the vagus nerve and lactation, the spontaneous firing activities of gastric anterior branches of vagus nerve were Observed in lactating and non-lactating rats.

为研究大鼠胃速走神经活动与授乳的关系，我们观察了授乳大鼠与非授乳大鼠胃迷走神经胃前支的自发放电活动。