空中传播的

There is another very important question. With what speed does the electromagnetic wave spread in empty space?

还有另外一个非常重要的问题，电磁波在空中是以多大的速率传播的呢？

In this paper, we investigate some interesting models of dark energy, especially the brane scenario, in which our four dimensional universe is embedded in a higher dimensional spacetime where the gravitation can propagate in.

在胚世界宇宙学框架下，我们所生存的四维宇宙被认为是镶嵌在更高维的时空中，而引力相互作用可以在整个高维时空中传播。

But the impact of limiting flights at this point is difficult compared to the downside of the economic impact.

毫无疑问，空中旅行传播禽流感，"说这番话的是曼德尔，他是波士顿儿童医院的一位医生兼信息程序研究员以及在哈佛医学院作副教授"但是，由于经济下滑给生活带来的影响已经很大了，如果再限制航班，势必会更加困难。

By sky or ground wave propagation, the detection range of the HF radars breaks through the limit of the curvature of the earth, which makes it possible for long-range air early-warning and target monitoring. At the same time the unique abilities in detecting low-detectable targets of the HF radars makes them powerful equipments for detection of hermit aircrafts, small airplanes in heavy land and sea clutters, and even intercontinental missiles.

借助于天波或地波传播方式，高频雷达的探测范围突破了地球曲率的限制，因此使远距离空中预警和目标监测成为可能，同时高频雷达所具有的独特和良好的对低可探测性目标的探测能力，使之成为探测隐形飞行器和处于强地杂波和海杂波背景中的小型军用飞机、巡航导弹等贴地、贴海飞行的小目标及洲际导弹进行有效探测的有力装备。

First, founded on the existing research about the diffusive regularity of jet flow, theauthor analyzed the diffusion of nappes that flowed through surface outlets and broughtforward the main influencing factors.

第一部分为引用水舌空中扩散研究成果，详细分析了表孔挑流水舌在空中的扩散传播规律，提出了影响挑射水流扩散的主要因素。

Before Einstein, scientists believed that light traveled through space in a straight line.

在爱因斯坦之前，科学家们一直认为光是以直线的方式在空中传播的。

We remember that the velocity of light in vacuo, or in other words, in ether, is 186,000 miles per second and that light is an electromagnetic wave spreading through the ether.

我们记得在真空中，或者说在以太中，光的速度是3.0×10^5公里每秒，而光就是在以太中传播的电磁波。

Objective To investigate the effects of interleukin-1 β converting enzyme gene on the biologic characteristics of ovarian cancer cells.

目的 探讨白细胞介素-1 β转换酶的表达，对卵巢癌细胞生物学特性的影响。

Campylobacter: This illness is the most commonly identified cause of diarrheal illness in the world.

弯曲：这种病是最常见的原因查明腹泻病，在世界上。