single-spanCOCA³¹⁵¹¹¹⁺⁴BNC⁹⁷²³³⁺⁷Economist⁵³⁵⁸¹⁺¹ 基本例句 n.单跨;🌏单悬臂;单跨桥 The results indicate that the three- span guardrail system absorbs more energy with greater uniformity and rationality than the single-span guardrail system does. 结果表明:三跨护栏系统吸收了较多的能量,整体的能量吸收更加均匀、合理。 cnki