本文用正交试验法研究了舵展弦比、前缘后掠角、梢根比和翼剖面对舵性能的影响；
Described in this paper are the effects of the aspect ratio, the swept-back, the taper ratio and the profile of the ship rudder on its hydrodynamic performance by a test method of orthogonality.
介绍了采用激光片光技术在风洞中进行双三角翼剖面流动显示研究的方法和主要结果。
In this paper, the laser sheet technology is used to research the flow visualization of sections of double delta wing, and some important results are introduced.
翼剖面；机翼；翼面一个部件或平面，如机翼、螺旋桨叶、方向舵等，其形状或方位控制稳定性、方向、抬升、冲击或驱动。
A part or surface, such as a wing, propeller blade, or rudder, whose shape and orientation control stability, direction, lift, thrust, or propulsion.
同时，除相对飞高外，翼剖面的厚度和拱度对地效翼的气动力特性也有重要影响。进而，作者对应用CFD分析或辅助地效翼气动力风洞试验进行了探讨。
The calculation results also showed that besides the relative ground clearance, the ratios of thickness and camber of wing profile have significant influence on the aerodynamics of WIGs.
如果一个褶曲的形态在横剖面上表现为两翼向同一方向倾斜，那么这种类型的褶皱该怎样命名?。
If a fold so develops that both of limbs dip toward the same direction. In such CASE, what should we call for this kind of fold.
旋翼设计包括桨毂构型、旋翼桨叶片数、旋翼直径、旋翼实度、翼型剖面等一系列影响直升机性能的因素。
Rotor design is comprised of some factors such as hub configuration, blade number, rotor diameter, rotor solidity and airfoil which have effects on helicopter performances.
复合材料桨叶剖面特性是旋翼桨叶设计的最基本原始参数，也是桨叶结构设计、动力学设计和结构分析的基础。
The design of structure and dynamics of a rotor blade is based on its section characteristic of composite blade.
复合材料桨叶剖面特性是旋翼桨叶设计的最基本原始参数，也是桨叶结构设计、动力学设计和结构分析的基础。
The design of structure and dynamics of a rotor blade is based on its section characteristic of composite blade.
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