Jiajun's Blog

Contents1. Introduction 1 2. The mathematical analysis and theoretical modeling of the water rocket 1 2.1. The velocity of ejected water 1 2.2. The motion parameter of water rocket during exhaust phase 3 2.3. The motion parameter of water rocket during exhaust phase 4 2.4. Simulations 6 2.4.1. Relationship between initial pressure and maximum altitude and duration 8 2.5. relationship between initial air to water ratio and maximum altitude and flying d ...

Welcome to Hexo! This is your very first post. Check documentation for more info. If you get any problems when using Hexo, you can find the answer in troubleshooting or you can ask me on GitHub. Quick StartCreate a new post1$ hexo new "My New Post" More info: Writing Run server1$ hexo server More info: Server Generate static files1$ hexo generate More info: Generating Deploy to remote sites1$ hexo deploy More info: Deployment

CSS LayoutBOX modelmargin collapse 默认增加 pedding and border box会变大 需要添加 123*{box-sizing : border-box;} 来固定box size “*”这个选择器不对伪类生效 如 1::before 和 ::after 需要添加 123*, *::before , *::after{box-sizing : border-box;} Inline don’t respect the width and height properties. To give them width and height, we need to give them ‘display : inline-block ’ properties Overflow: when use the border-box, if the there is too much content that the box size is not enough, the overflow can happe ...