A modern sports glider, with long, slender wings, is the most aerodynamically efficient aircraft, with a lift-to-drag ratio of around 50:1.
现代运动用滑翔机的机翼长而细薄，拥有最佳的空气动力学效率，其升阻比达到50：1。
2
The problems of large length-diameter ratio and difficult core pulling for slender pipe-shaped composite parts with poor rigidity can be solved.
解决了长径比大，刚性差细长管形复材零件抽芯困难的问题。
3
Meanwhile the effects of slenderness ratio and load eccentricity on the ultimate load-capacity of slender composite columns are numerically analyzed and discussed in detail.