介绍了路侧设计“宽恕”理念的定义和具体应用——“路侧净区”。
The situation of roadside design in China and the necessity of applying forgiving concept are analyzed, too.
但它同时又是路侧障碍物的一种，路侧净区内的标志柱对驶出路外的车辆是一个潜在的危害。
Meanwhile it is a kind of obstacles on roadside and it is a potential endanger to the run-off-road vehicles.
强自吸泵为机械式自吸泵，具有独特的吸真空装置，可将泵的吸入侧空气排净，达到泵正常运转的条件。
Strong self-suction pump is a kind of mechanical self-suction pump with unique vacuum unit. It can discharge completely air of suction side making running conditions for the pump.
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