2008年北京奥运会的国家体育场工程钢结构工程量大，用钢量多，种类复杂，采取了多种措施保证钢材的质量。
The steel struture engineering work load of 2008 Olympic national gymnasium is big, and the steel usage and category are large. Many measures are adopted to ensure the material quality.
尤其在道路工程中，因其数量多、工程量占总工程比重大，其安全运行的重要性日益突出。
Especially in civil engineering, its importance of security becomes obvious day by day for their excessiveness in quantity and the proportion of the work.
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