This article introduces the construction technology and operating main points of the arch rib concrete poured of the arch bridge of steel tube.

具体介绍大跨度钢管拱桥的拱肋砼灌注施工工艺及操作要点。

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Trickling water frequently occurs in the outside appearance of biconnected arch tunnels after the secondary lining, influencing their construction quality and operating.

在双连拱隧道施工中，二次衬砌完成后表面往往会出现渗漏水现象，对双连拱隧道施工质量及营运造成影响。

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Origins of crack in JinKeng arch dam that are discussed in this article are variety, but the direct origin is that dam body suffers sudden fall of temperature in operating period.

本文讨论的金坑拱坝裂缝的成因具有多重性，其直接成因是坝体经受了气温骤降的恶劣运行工况。

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Shabby figures when measured up against arch rival BMW, whose operating margin was at 0.46%, return on assets was 0.20% and the return on equity was1.02%.

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