I enjoyed the tour of the school and was fascinated everything that i saw . you have every right to be proud of nan - hu 在贵校看到的每一项事物都很让我叹为观止,你们真可以将南湖国小引以为傲
2.
This is a 2 - stroke engine , although its efficiency is lower than a four - stroke engine , its specific efficiency ( it is lighter ) is higher , so it is often applied in some small engines , etc . motorcycle and electronic saw 这是一组二冲程的引擎，他的效率不如四冲程来的高，但是因为重量与功率比很高也就是体积轻巧，所以常常用在如机车、电锯等小引擎的应用上。
3.
With one terabyte 1 , 000 gb of storage in this elegant , small footprint design , you have plenty of room to store an entire digital photo library , up to 120 hours of hd video , or up to 76 hours of digital video -该raid磁盘阵列采用精巧的小引脚设计，容量高达1tb 1 , 000gb 。您有充足的空间储存整个数字图片库，可储存高达120小时的高清视频文件，或76小时的数字视频文件。
4.
Based on it , the performances of all kinds of supersonic ejectors are compared and the effects of variety of input parameters on the performances of supersonic ejectors are discussed . the conclusion is reached , that the design scheme of small ejecting coefficient , high ejecting mach - number , combustion - gas driving should be adopted to develop high performance , high compression - ratio prs . thirdly , the method of computational fluid dynamics is used to numerically solve the flow - field of the annular supersonic ejector with or without a second flow 接着，推导了超声速引射器各种一维理论模型，并应用一维理论公式分析、比较了各种超声速引射器的性能及其变化规律，全面探讨了各设计参数对超声速引射器性能的影响，得到了高性能、大压缩比引射器系统应该采用小引射系数、高引射马赫数、燃气引射、优化超声速引射器设计方案的结论。
