The main spring of the alarm clock is broken. 闹钟的簧断了。
To increase the number of the main spring sunshine and winter and summer at least. 以春季日照时数增加为主,冬季次之,夏季最少。
Applying of cluster analysis in main spring recognition 聚类分析在主跃层识别中的应用
Numerical value modeling analysis and experimental verification of rubber main spring 橡胶主簧的数值建模分析与实验验证
The sustainable development of ecological environment is closely connected with economic development. A good ecosystem provides an environment for human survival, and is the main spring of human development. 生态环境的可持续发展与社会经济发展息息相关,良好的生态环境系统既是人类赖以生存的环境,也是人类发展的源泉。