Tunnelling machines - shield machines, thrust boring machines, auger boring machines, lining erection equipment - safety requirements.

隧道掘进机。盾构机止推钻孔机螺旋钻探机衬里安装设备。安全要求。

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Safety factors of rock, including shear safety factor and tensile safety factor, safety factor of lining and design calculation methods of tunnel are studied.

研究了隧洞围岩安全系数(剪切安全系数、拉裂安全系数)与衬砌安全系数的算法以及隧洞设计计算方法。

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As tunnels are important structures of highway projects, the treatments of fissure in the lining of tunnels play great roles in the safety operation of tunnels.

隧道是公路工程建设中的重要结构物，隧道衬砌裂缝控制对隧道的安全运营非常重要。

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There is no shortage of issues swirling around the food industry, and one of the most debated topics involves the compound bisphenol A. Known by its acronym BPA, it has been used for many decades in a wide array of industrial and consumer applications, ranging from hardened plastics to the epoxy safety lining of many food and beverage cans.

FORBES: Using Science As the Guiding Hand of Food Policy

Investors flocked to the safety of long-term government bonds, providing a tin lining to the darkening clouds over the economy.

FORBES