复合管河道栏杆 防撞护栏批发 镀锌河道护栏
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该原则主要是从公路等级、桥梁护栏外侧的危险物特征等方面考虑。
The principle is mainly considered from the highway grade, the characteristics of dangerous substances outside the bridge guardrail, etc.
即防撞等级的确定。
That is, the determination of anti-collision level.
该原则是所有所选护栏都应满足的基本要求。
This principle is a basic requirement for all selected guardrails.
所以在是否是合理选择的问题上本条原则上不能作为判别依据。
Therefore, in principle, this article can not be used as the basis for judging whether it is a reasonable choice.
佛山复合管护栏加工定制 防撞河道桥梁护栏厂直销
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