直线传播

从波动理论出发，证明极限情况下光的衍射结果就是光的直线传播。

Conclusion that result of diffraction of light is rectilinear propagation in limited condition is demonstrated from wave theory .

特别是其中的第三条描述了针孔成像实验，并用射箭的飞行来比喻光的直线传播。

Especially the third one describes the pinhole image formation experiment and analogies rectilinear propagation with the archery flight .

光通常以直线传播。

Light typically travels in a straight line .

根据光的直线传播原理，计算辐射在冠层内三维空间上传播和受冠层内面元截获的过程，建立了PAR在玉米冠层内三维空间上分布的模拟模型。

Based on the principle of geometric optics , a set of models have been developed to simulate the 3D PAR distribution in maize canopy by calculating the light propagation and interceptions among the facets in crop canopy .

众所周知，光沿直线传播。

That light travels in straight lines is known to all .

众所周至，光以直线传播。主语从句。

It is well known that light travels in straight lines .

光以每秒186000英里的速度直线传播。

Light travels in straight lines at186000 miles a second .

传输电视信号的微波以直线传播。

Microwaves that transmit television signals always travel in a straight line .

在均匀介质中光沿直线传播。

In a uniform medium light travels in straight lines .

早先在生活中我们就知道光是直线传播的。

Early in life we learn that light travels in straight lines .

光沿直线传播这是毋庸置疑的。

It is clear that light travels in straight lines .

从光的衍射看光的直线传播及像质问题

Light Straight-line Propagation and Imagery Quality From Light Diffraction

无线电波是直线传播的。这传统一直延续到今天。

Radio waves travel in straight lines . The tradition has persisted to this day .

这些高频短波从发射机发出后只能从直线传播。

These high-frequency shout waves are only able to travel in straight paths from the transmitter .

稍加思索，就能理解光总是直线传播的。

With a little reflection , it may be seen that light always travels in straight lines .

光遇到物体就折射回来，因为光是直线传播的。

Light can be given back when it meets an object because it travels in straight lines .

不管是发光体还是非发光体发出的光都是以直线传播。

Whether light comes from a luminous or a non-luminous object , it travels in straight lines .

每当（凡是）波从均匀介质中的波源移出时，它都呈现直线传播。

Whenever a wave moves out from a source in uniform medium , it travels in straight lines .

普通光源向四面八方辐射，而激光可以基本沿某一条直线传播。

Ordinary radiation light source in all directions , and a laser can basically along a transmission line .

超短波的传播方式为直线传播，地理环境以及电磁干扰等因素对其传输具有很大的影响。

Geography and other factors on the transmission of electromagnetic interference have a great impact on VHF communication due to the line of sight .

设水平或竖向地面运动是沿水平方向直线传播的平稳随机过程。

In this paper , the horizontal or vertical ground motion is considered as a stationary stochastic process travelling along an arbitrary horizontal direction .

毕竟人们一度普遍相信，由于地球是弯曲的，无线电波沿直线传播，所以无线电不能传过大西洋。

After all , was once widely believed that due to the curvature of the earth , radio transmission across the Atlantic would never be possible because radio waves traveled in straight lines .

他们抬头仰望，看向群星，发现从广阔的宇宙射来的光线变化轻微，并假定光沿直线传播，或这近乎直线。

They look out into the sky , into the stars , and see a slight variance in light rays that come over the vastness of space , and assume a straight path , or nearly straight .

当在介质中传播的辐射，形如光波、电磁波以及声波等，在通过局部嵌入介质的障碍物时，受其影响必须改变原有的直线传播轨迹，该物理过程称为散射。

The radiation propagating through medium , such as optical , electromagnetic and acoustical waves , will change its original rectilinear trajectory influenced by the obstacles embedded in the medium , and this physical process is so-called scattering .

在空中声音以直线的方式传播。

In air , sound travels in a straight line .

但是在心肌分层后兴奋传播途径不再是直线，矢量传播算法也带来误差。

However , there exist errors from both algorithms when the myocardium has the layered structure .

网络媒体改变了传统媒体单向直线型的传播模式，而更讲求传受双方的互动性。

Network media has changed one-way linear spread model of traditional media to more emphasis on interactivity of transmission by the two sides .

总之，微波只能以直线的方式传播，没有一系列的传播塔，它们就不能越过漫长的距离，把消息传递到遥远的地方。

On the whole , microwaves can be but only transmitted in straight line , which makes it impossible for them to travel over a long distance and bring signals to remote places without help of trasmission towers .

不像旋转电机那样，直线电机在其传播过程中有开端和结尾。

Unlike rotary electric motors , the linear motor has a beginning and an end to its travel .

光像其他辐射能一样辐射，就是说它从光源以直线的方式向外传播。基于分布式外辐射源雷达的反辐射导弹成像与识别技术研究

Like other varieties of radiant energy , light radiates , that is , it spreads out from its source in straight lines . The Research on Imaging and Recognition of ARM Based on Passive Radar with Distributed Illuminators