如沉箱前有倒坡时的波压力分布，码头人力桥受力分析等，使设计更加完善合理，可供有关工程参考。
Such as wave pressure distribution in case of inverse slope in front of the caisson, analysis to the force acted on the wharf crowd bridge, etc.
本文分析了室内排水埋设工程，管道堵塞、漏水、倒坡等问题，并提出从设计到施工应采取的预防措施。
This paper analyses the problem of leak and backward slope in indoor pipeline and brings forward the prevention from design phase to construction phase.
本文介绍了加工管道坡口的机械——管道平头倒坡口机的设计原理、主要技术参数、特点和使用时的注意事项。
This article introduced the design principle, chief technical parameters, characteristics and points for attention of the chamfering machine for pipe end.
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