多年以来,混凝土被认为是坚固耐久的。
对上下游护坡的要求是坚固耐久,能抵抗各种因素的破坏作用,并保证底层不受淘刷。
Revetments must be sturdy and durable, able to resist damages caused by various factors. Their undercourse must not be scoured.
架空支撑结构:采用镀锌钢制造的横梁、支架、高度调节范围大,坚固耐久,安装方便。
Aerial support structure: beam and stander made from galvanizing steel, adjustable height, strong and durable, easy to install.
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