Design and develop the device of motorcycle engine compression ratio measuring system.
摩托车发动机压缩比测量装置的设计开发。
High-volume ratio: a compact design, small size, light weight, flexible and convenient to carry.
高容积比：紧凑设计，体积小，重量轻，携带灵活方便。
In this paper, an effective design optimization method for High-aspect-ratio composite wing skin is presented.
论文以大展弦比飞翼布局机翼蒙皮的优化设计为背景，开展了复合材料层压板结构的优化设计工作。
The ratio and shape of the top is accurately the same as the original design.
陀螺比例和外型经过严谨的设计还原。
The ratio and shape of the top is accurately the same as the original design.
陀螺比例和外型经过严谨的设计还原。
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