The model of the head down tilt trial can be used to study the change of physical functions and mechanisms when the people lie in the state of being inverted.

应用头低位倾斜试验模型，研究人体处于倒置状态下产生的机体功能的变化及发生机理。

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The feet-down tilt position and high CO2 pneumoperitoneum pressure can interfere with the recirculation of blood, and could increase the risk of deep vein thrombosis after laparoscopy.

头高脚低位及高CO2气腹压均可使血液回流不畅，导致术后下肢深静脉血栓发生的风险可能增加。

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For three weeks, the participants lay in bed with their heads tipped down at a 6 percent tilt.

三周时间里，参与者保持头部6度向下倾斜躺在床上。

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The same 3-inch LCD is back again, flipping up 180-degrees for selfies, but sadly, it still can't tilt down for overhead shots.

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In particular, a few readers complained that the new keyboard no longer has a flap underneath it to make the keyboard tilt down and away from you.

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Cities such as Shanghai and Tianjin have sunk six feet over the past decade and a half as precious underground water reserves are drawn down, causing skyscrapers to tilt and encouraging coastal flooding.

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