查询词典 radiation

Some 15 years ago the radiation of uranium was discovered by Henri Becquerel, and two years later the study of this phenomenon was extended to other substances, first by me, and then by Pierre Curie and myself.

大约十五年前铀的辐射由亨利·贝克勒尔发现，两年以后，对这一现象的研究首先由我，然后由皮埃尔·居里和我自己扩展到了对其他物质的研究。

Usually 1896 Becquerel discovered natural radioactivity as the beginning of nuclear physics, the next 40 years, it is mainly engaged in the nature of radioactive decay and radiation research.

通常把1896年贝克勒耳发现天然放射性做为核物理的开端，此后的40多年，人们主要从事放射性衰变和射线性质的研究。

Together they were awarded half of the Nobel Prize for Physics in 1903 on account of their study into the spontaneous radiation discovered by Becquerel, who was awarded the other half of the Prize.

这种态度使他拒绝接受十字勋章。在科学的领域内，他的态度也是如此；他不理睬竞争精神，在"发现的竞赛"中，若有同行占了先筹，他从来不觉得难过。他惯常说："假如有人发表了某种工作，我不发表它有什么关系？……"

"Radioactivity: Property exhibited by certain types of matter of emit ting radiation spontaneously. The phenomenon was first reported in 1896 by Henri Becquerel for a uranium salt, and it was soon found that all uranium compounds are radioactive due to the uranium's radioactivity."

放射性：某些类的物质自发发射辐射的特性。1896年贝克勒耳第一个报告在铀盐中发现了这一现象，不久发现由于铀有放射性，所以所有的铀化合物都是放射性的。

In Chapter 2, a simplified analytical model is presented for the analysis of the BVI mechanism, adopting the Beddoes' prescribed wake model. By this model, the azimuthal location and miss-distance of the BVI and the radiation directivity of the BVI noise are calculated and discussed, and some conclusions are obtained.

在第二章，使用Beddoes预定尾迹模型，建立了一个用于旋翼桨-涡干扰特性机理分析的简化数学模型，分别对旋翼桨-涡干扰位置、桨-涡干扰距离和声辐射方向性等进行了计算和分析，得出了有意义的结果。

About the windbreaks of Chi-Sing Tang, the average wind and salt reduction already reached 90% at 140 m inside it; furthermore, the salt content of beefwood, in the soil and the amount of floating all increase with the horizontal distance but decrease progressively and descend 10 mg/100ml at 150 m; however, the average temperature and ground temperature is 2℃ higher, and the water content in soil is about 0.4% higher inside the forest belt than the outside of it; the trend of the atmospheric pressure and opposite moisture is the same, but the illumination is only 1/215, and the radiation is 1/20 of that of the outside forest belt.

至於七星潭海岸防风林经分析得知，位於防风林带内140 m处减风与减盐效果可高达约90%；再者，叶片与土壤盐份量及空中飘盐量之分布，随水平距离增加而递减，在150 m处皆已降至10 mg/100ml以下；至於林带内平均气温与地温则较林带外高约2℃，土壤含水量较林带外高约0.4%，而气压及相对湿度亦有相同之趋势，但光照度则仅为林带外1/215，日辐射量亦只有1/20。

The radiation noise of gearbox housing is studied by the use of combined the FEM and BEM.

采用有限元和边界元联合的方法对变速器箱体的辐射噪声进行分析研究。

It is rather instructive for the further researches for the interaction of radiation with polymeric compounds, especially for the research of the ring benzene.

对于高分子化合物尤其是具有苯环结构的有机高分子化合物的外场作用特性的研究具有参考价值。

"The results of the study represent a real breakthrough in head and neck oncology," lead author Jacques Bernier, MD, a radiation oncologist at the Ospedale San Giovanni in Ticino, Switzerland, says in a news release.

这项研究结果象徵著头颈部肿瘤学的真正突破。」主要作者Jacques Bernier医师，一位来自瑞士 Ticino ，Ospedale San Giovanni的放射肿瘤学家在记者会上说。

The reflectivity of the multilayer is measured at Bessy Ⅱ synchrotron radiation, and the peak reflectivity is measured to be 7.5%.

对衍射仪测量的掠入射反射曲线和同步辐射测量的反射率曲线分别进行拟合，得到的粗糙度和厚度比的结果相近。

They weren't aggressive, but I yelled and threw a rock in their direction to get them off the trail and away from me, just in case.

他们没有侵略性，但我大喊，并在他们的方向扔石头让他们过的线索，远离我，以防万一。

In slot 2 in your bag put wrapping paper, quantity does not matter in this case.

在你的书包里槽2把包装纸、数量无关紧要。