The in-plane free vibration frequencies and nonlinear internal resonance of circular arches were studied.
对圆弧拱面内自由振动的频率和非线性内共振现象进行了研究。
As for us, we've started using our plane time as a work-free zone, and thus time to dip into the recovery phase.
对于我们来说，我们已经开始将飞行时间用于休息，从而有时间渐入恢复阶段。
This is the plane while it is in free fall.
这就是在自由落体的飞机。
When is the plane at its highest point of its trajectory and how high is it above the point where it started when it turned the engines off when it went into free fall?
飞机在飞行轨迹的最高点，是什么时候，此时距离出发点，也就是关闭引擎的时刻，高度相差多少？，什么时候开始自由落体？
Who wouldn't want to fly a plane, travel the world for free and make good money while doing something few people can do?
谁不想开着飞机，满世界免费旅行，拿着不错的薪水，从事着少数人才能干的工作呢？
It was as though Orville and Wilbur Wright had not just discovered powered flight but had built a plane with tray tables and a duty-free service.
那时赖特兄弟好像还没有发明动力引擎飞机，但用折叠餐桌和免税服务引擎的购物中心已经起飞。
The moment to leave after the plane, is a kind of stimulation and excitement, but when you have a free fall, opened at that moment, an umbrella kind of calm, view of the world, feel like in heaven.
离开飞机后的那一刻，是一种刺激和激动，但当你经过了自由落体，打开伞的那一刻，那种平静，看世界的角度，感觉好像是到了天堂。
Let's say a plane arrived late in Houston and the "Continental" flight attendants onboard had finished their shift and a "United" reserve crew was free.
让我们设想一下这个古怪情景：一架飞机晚点到达休斯顿，机上的“大陆航空”空乘人员已经完成了他们的工作班次。
The space illusion of plane includes the real space illusion, the free space illusion, the contrary space illusion and the abstract space illusion.
平面中的空间幻象包括：真实的空间幻象、自由的空间幻象、矛盾的空间幻象和抽象的空间幻象。
Free form surface is most important feature to shape of product such as plane, automobile, motorcycle.
自由曲面是工业产品，尤其是飞机、汽车、摩托车等行业产品外形的重要特征。
Do you sell duty-free on the plane?
你们有在机上贩售免税商品吗？
With a continuously distributed dislocation model, this paper deals with cracks inclined to a free surface of a semi infinite plane under remote loadings.
采用连续分布位错模型讨论和分析了受远处载荷下半无限平面自由边界附近任意方位的裂纹问题。
The analytic method for the free vibration of plane frame structure is presented.
介绍了一种平面杆系结构自由振动的解析解法。
The authors consider a free boundary problem arised from the radical flow of plane Non Newtonian fluids with yield stress.
研究了具阀门梯度的平面径向流动引起的一类自由边值问题。
Although this paper deals only with the plane control network, the method that the paper puts forward may also be used to adjust other types of free network.
尽管本文只讨论平面控制网，但它所提出的方法也可用于加权亏秩自由水准网的平差。
Speckle images are produced by the reflected and scattered light beams from rough surface through free-space to observing plane when laser illuminates the object surface.
激光经过被测表面反射和散射后，通过自由空间传播至观察面上形成散斑图像，其统计分布依赖于被测表面的微观形貌。
The plane wave solution and spherical wave solution to free particles are also given.
在自由粒子的情况下给出了粒子的平面波解和球面波解。
On the basis of preceding main results, a mechanic model of overburden-karstic free face with a weak structural plane is presented in this paper.
本文在总结前人成果基础上，提出存在一个软弱结构面的覆盖岩溶临空面的力学模型。
A view popular in physics is to start with uncharged electrons and cores, which are therefore both free and plane waves and can have any energy, and then fade in the charge.
物理学中流行的方法是从不带电的电子和原子核出发，因为它们是自由的平面波，可以具有任意能量，并在带电后衰减。
The existing calculations for free frequency of the jib involve the vibration in the working plane and the vibration in the direction perpendicular to the working plane is usually neglected.
通常臂架自振频率的计算多关注于工作平面，而对垂直于工作平面的臂架自振频率的计算则被忽视。
A comprehensive study of free vibration, buckling and bending of anisotropic simply-supported skew plates subjected to in-plane normal and shear forces is conducted.
对简支各向异性平行四边形板在面内张力和剪力作用下自由振动、屈曲和弯曲问题作了全面的研究。
The free shear layer is a typical flow phenomenon which includes transition and turbulence. The plane jet is a type of free shear flow more complicated than the plane mixing layer.
自由剪切流是一种典型的包含转捩和湍流的流动现象，而平面射流是一种比平面混合层复杂的自由剪切流。
The free shear layer is a typical flow phenomenon which includes transition and turbulence. The plane jet is a type of free shear flow more complicated than the plane mixing layer.
自由剪切流是一种典型的包含转捩和湍流的流动现象，而平面射流是一种比平面混合层复杂的自由剪切流。
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