... infarction of placenta 胎盘梗死 internal podalic version 内倒转 intra-amniotic transfusion 羊膜腔内输血 ...
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事实上这是一种中国古代道家养生术内倒转河车，返老还童之方法。
Actually it is a way of reviviscence by ancient Chinese Dow hermits.
图3显示了位于一个倒转试管(用来做防雨保护)内的一个绿色LED。
Figure 3 shows a green LED inside an inverted test tube for protection against rain.
齿轮泵带负荷停车时，亦可防止泵倒转而在其输出管道内产生局部真空。
Gear pump to stop loading machine, can be in the output pipe to prevent pump reverse, and create a partial vacuum.
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