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。
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.
同时就柱子长细比、荷载偏心距对长柱极限承载力的影响进行了较详细的数值分析和讨论。
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。
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