翼的

The discovery of Darwinopterus is highly significant, because it fills the gap between non-pterodactyloids and pterodactyloids and provides evidence of biological macroevolution mechanism, i.e., the entire modules, or groups of body features, evolved together within a relatively short period of time.

达尔文翼龙的发现具有重要意义，它填补了由原始翼龙类向进步翼龙类演化的空白，为生物宏观演化机制-即组成生物体的模块在短时间内共同演化提供例证。

In the equation, the unknown parameters are determined by the crack initiation angle, the crack length and the angle between the direction of the maximum principal stress and the crack surface.

采用双曲线翼型裂纹路径和试验中所得翼型裂纹路径进行了对比分析，二者吻合得很好，验证了采用双曲线近似表示真实存在的翼型裂纹模型的正确性。

The selectable equipments are rotor mast aiming system, two pods with 2 TOW missiles for each, Blackhole infrared suppresser, two pods with 2 Stinger missiles or other types of air-to-air missiles for each, FLIR system for pilot, AN/APR-39(V-1) radar warning system, fuel tank on hardpoints, advanced avionics and mission equipments.

旋翼轴瞄准具可将视频信号输给飞行员的电视显示器。旋翼轴瞄准具备激光测距仪。为了不被敌人发现，"防御者"Ⅱ直升机可借助旋翼轴瞄准具在树木或地形后面进行隐蔽悬停，而且还能观察战场远处的情况。只要稍作改装，就可安装为OH-6A研制的标准轻型航空电子设备。

Based on the law of resistance variation of the hydrofoil small water area twin hull ship,the calculation method about the ship resistance of HYSWATH on foil borne is discussed,including the wave-making resistance,the viscous resistance,the hydrofoil resistance and the disturbance resistance between hull and hydrofoil and so on.

分析了水翼复合小水线面双体船的阻力变化规律，给出此船型各阻力成分的计算公式，并在此基础上讨论HYSWATH处于翼航状态时吃水和纵倾角的计算，形成了一套较完善的HYSWATH翼航状态阻力计算方法。

Blade assembly is cured at 250℉ in a machined metal mold. After curing, the blade is trimmed, the Polyurethane leading-edge erosion strip is applied, and the blade is finished and balanced. Tungsten leading-edge weights in the outboard 50% of the blade provide aeromechanical stability, and tungsten tip

主旋翼翼梁以石墨、玻璃纤维及环氧树脂模合而成，诺美克思蜂巢结构的翼后缘夹心黏附於翼梁及旋翼后缘强化结构上，组成后在华氏250度的预热金属模上包里玻璃纤维叠层，经过修裁，加上聚配胺抗腐蚀片后才告制作完成。

Held in Sebring, Florida, the Expo is the place to see, buy, and sell aircraft operating under the LSA rule such as fixed-wings, trikes, powered parachutes, motor-gliders, and gyroplanes.

来到福罗里达州赛布林市举办的这个展览会，你可以参观、采购和销售根据LSA规则运行的飞机，如固定翼轻型飞机、三角翼、动力伞、电动滑翔机和旋翼机。

Experiments were done to contrast the heat tansfer enhancement and pressure loss caused by several single-pare vortex generators such as delta winglets,rectangular winglets,trapeze winglets,bevel-cut half-cylinder VG and bevel-cut half-elliptical column VG,which were installed in a rectangular tunnel respectively.

在雷诺数为4000～38000的紊流范围内对矩形风道内分别布置单排一对直角三角翼、矩形翼、梯形翼、斜截半圆柱体、斜截半椭圆柱体等涡流发生器的强化传热效果和压降特性进行了对比实验。

On the base of former rigid wing model , new flap- wing model is developed by considering the deformation of wing and the change of flapping velocity, so it can simulate the flap motion of bird wing better.

本文在原有匀速刚性模型的基础上，提出考虑了扑翼形状变化和扑动速率变化的扑翼分析模型，使之更接近鸟翼柔性扑动真实情况。

To combat this aerodynamicists need to speed up the flow near the wings surface, to do this they split the wing into separate elements, this creates a slot.

为了改善这种状况，空气动力设计者把尾翼分成了独立的几片小翼，小翼中间留出了一点空隙，尾翼上表面的高压气流通过这些缝隙流到了下表面，这样就加速了翼下气流的速度。

Example: Turning right, the right tip of the wing goes down and the left side is goes up, thus we rotate about an axis through the center of the wing.

向右旋时，右侧的翼端会向下沈，左侧的翼端则会向上升，因此我们会沿著伞翼中心的轴线旋动。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。