secondary emission ratio [物] 二次发射比 ; 二次发射系数
secondary fission ratio 次生裂变比
Secondary Compression Ratio 次要压缩比
secondary air ratio 二次风率
Secondary drive ratio 二次传动化
secondary to primary turn ratio 次级对初级的匝数比
secondary sex ratio [遗] 次级性比 ; 第二性比
Secondary InterferenceTime Ratio 最后提出次干扰时间率 ; 次干扰时间率
The secondary gross enrollment ratio was eight percentage points higher than the previous year. Regular undergraduate enrollment increased by 420,000, and graduate enrollment by 27,000.
高中阶段教育毛入学率比上年提高8个百分点,普通高校招生数增加42万人,研究生增加2.7万人。
Secondary buckling mode of shallow arches depended on the ratio of rise to gyration radius.
对于矢跨比较小的坦拱,矢高与截面回转半径的比值将决定拱的屈曲形式。
The main studying contents of this thesis are optimization-design of the mixture ratio of tunnel's secondary lining concrete and internal structural analysis.
本文的主要研究内容为隧道二次衬砌混凝土配合比优化设计及其结构内力分析。
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