我认为它是单转点系统是因为后部运动形式像单转点系统。
I think it's a single pivot system because the rear type will just move like a single pivot system.
大多数关于危重患者伴急性肾衰的流行病学研究都以单中心为基础，或者使用离散的转归来分析单个时间点暴露所获得的资料。
Most epidemiological studies of ARF in the critically ill have been based at single centers, or have examined exposures at single time points using discrete outcomes (e. g., in-hospital mortality).
第二类，一个〝不对称的失速〞或者〝平转〞，只发生在当飞行员用双侧煞车减速，在将近失速点之前过度使用单侧煞车时。
The second type, an "asymmetric stall" or "flat spin happens when the pilot slows down on both brakes to just before stall point and then further applies one brake.
第二类，一个〝不对称的失速〞或者〝平转〞，只发生在当飞行员用双侧煞车减速，在将近失速点之前过度使用单侧煞车时。
The second type, an "asymmetric stall" or "flat spin happens when the pilot slows down on both brakes to just before stall point and then further applies one brake.
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