This is simply a curved section of pipe that "traps" water in it.
这纯粹是一种弧形管一段“陷阱”水。
The apparatus includes an accessor, a pinion and a rack having a straight section and a curved section.
所述装置包括：存取器、小齿轮和具有直线段和曲线段的齿条。
The vehicle's running state and running safety on curved section of highway are analyzed by dynamics principle.
根据动力学原理，对汽车在弯坡路段上的运行状态及行车安全性进行了分析。
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