The underground penstock for the Husonghe Hydroelectric Power Station was designed using the calculation method of raising the allowable stress as an open conduit;
户宋河电站地下埋管主管的设计,采用按明管设计提高允许应力的计算方法;
Be like at present already of open have "conduit blowout is accident loss danger"," danger of shopwindow glass accident"," commercial theft danger" and "the belongings that show lot is safe" etc.
如目前已开办的有“水管爆裂意外损失险”、“橱窗玻璃意外险”、“商业盗窃险”以及“露堆财产保险”等。
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