查询词典 X-rays

As professor of physics at the University of Wurzburg, he was experimenting with a Crookes' radiometer when he noticed that when cathode rays struck the end of the tube, rays of a new kind were emitted that were capable of penetrating matter.

作为Wurzburg大学的物理教授，Roentgen当时正在使用Crookes的放射计进行试验。他注意到当阴极射线撞击到射线管的末端时，会发出一种能够穿透物体的新型射线。

The next thing he found out was that if he put his hand between the rays and a photographic plate, the rayswould print a shadow of the bony framework of his hand on the plate.

他发现的第二件事情是假如他将手放在射线和感光板之间，射线会在板上印出手骨胳结构的影子。

The tool has the features of modular design and recording only high energy gamma rays from activated oxygen. Its measurement rating and accuracy are 10～600 m 3/d and 10%.

仪器具有模块化设计及探头仅测量氧活化伽马射线的特点，流量测量范围和精度是 10m3 /d～ 6 0 0m3 /d和± 10 %。

Seeds of Ailanthus altissima Swingle were treated with 60Co γ-rays at the doses of 0, 30, 50, 75, 100, 150 and 200Gy, the effects of irradiation on seed germination and seedling growth were studied. The results showed that irradiation inhibited germination, and decreased the survival rate and the growth of plants.

以椿树种子为材料，用60Coγ射线进行了0、30、50、75、100、150和200Gy辐照处理，研究辐照对椿树种子发芽及幼苗生长的影响，以期获得耐盐突变体。

NCS through seals the tunnel and the air corridor is connecting the global 28 big cities regions, more than 10 billion people in the world live in concentrated communities of these cities region, outside the cities region are ruins attacked by nuclear pollution and cosmic rays, according to the declaration

"新中方"还通过密封隧道和空中走廊串联著全球二十八个大城市区域，十多亿人便聚居在这些城市区域里，城市区域外是受高度到核污染和宇宙射线侵袭的废墟，据联合政府的调查报告宣称，它们已不适合任何生命的居住和繁衍，是死亡之地。

If the observer is at a great distance compared to the other dimensions of the experiment and the rays are nearly perpendicular to the reflecting surfaces, then the path difference between the two waves (corresponding to r1-r2 in the preceding section) is just twice the thickness d of the air wedge at each point.

如果观察者比起实验装置来讲距离较远而且光线较接近于垂直反射于表面，那么这两光波的光程差(在前面所述的相应部分 r1-r2)就仅仅是空气劈尖在该点处的厚度 d 的两倍。

The observer is at a great distance compared to the other dimensions of the experiment and the rays are nearly perpendicular to the reflecting surfaces, then the path difference between the two waves (corresponding to r1-r2 in the preceding section) is just twice the thickness d of the air wedge at each point.

如果观察者比起实验装置来讲距离较远而且光线较接近于垂直反射于表面，那么这两光波的光程差(在前面所述的相应部分 r1-r2)就仅仅是空气劈尖在该点处的厚度 d 的两倍。

Each emission of an alpha or beta ray accompanies the transmutation of an atom; the energy communicated to these rays comes from inside the atom.

每一次a 射线或b 射线的放射都伴随着原子的蜕变，因为赋予这些射线的能量来自于原子的内部。

The researches are concerned with alpha rays.

这些研究是关于阿尔法射线的。

In the same year he began to study the transformation of light elements by bombardment with alpha rays.

1920年代，博特用符合方法发现了来自上层大气层的穿透射线，这种射线现在被称为宇宙射线。

Now he worked in ajoint venture.

现在他在一家合资企业工作。

More troops in Afghanistan won't change any of the foregoing.

更多的在阿富汗的军队也不会改变之前的状况。