At the same time, the stability of big-span tunnel with influence factor such as section size, high-span ratio and depth is studied.
同时，论述了大跨度隧道的稳定性以及断面尺寸、扁平率和隧道埋深对稳定性的影响。
The long-span, high-aspect ratio wing provides exceptional climb performance.
跨度，高展弦比机翼提供优异攀登性能。
The long-span, high-aspect ratio wing provides exceptional climb performance.
跨度，高展弦比机翼提供优异攀登性能。
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