英语释义

• the spontaneous disintegration of a radioactive substance along with the emission of ionizing radiation

片语

radioactive-decay coefficient放射性衰变系数

radioactive-decay product子体

radioactive element decay放射元素衰变

radioactive E decay放射衰变现象

radioactive source decay放射源衰变

radioactive-decay curve放射性衰变曲线

radioactive alpha decay放射性阿尔法衰变

radioactive-decay rate放射性衰变率

radioactive-decay period放射性衰变周期

英汉例句

• ephraim fischbach, a physics professor at purdue, was looking into the rate of radioactive decay of several isotopes as a possible source of random numbers generated without any human input.

  普渡大学物理教授ephraimfischbach，将探测几种同位素的放射性衰变速率的方法作为一种没有人为输入因素干扰的产生随机数的可能方法。

• radon is produced from the natural radioactive decay of uranium, which is found in rocks and soil.

  它产生于可在巖石和土壤中找到的铀自然的放射性衰变。

• more recently thermogenerators that obtain their heat from the radioactive decay of plutonium have been used in spacecraft, such as voyager 1 and 2.

  更现代化的热能发电机从放射性的钵衰变获得能量，现在已经在航天器上使用，比如航海人1号和航海人2号。

• but rather than test the radioactive decay using just one method, the researchers used three, involving the elements lead, samarium and neodymium.

  但是，相对于仅使用一个方法测试放射性衰变，研究人员测定时使用了三种元素，铅，钐，钕。

• radon is a gas that comes from the radioactive decay of radium in rocks. the gas flows through the ground and dissolves in underground streams and wells.

  氡是巖石中放射性元素镭衰变时产生的气体。这种气体从地层中逸出、在地下水流和井水中溶解。

• 「these creatures get their energy from sources we never imagined, 」 mckay exclaims. 「the south african extremophile bacteria are powered by the radioactive decay of unstable atoms in the rocks.

  “这些生物从一个我们从未想到的来源获取能量，」mckay惊叹，“南非的极端微生物细菌吃的是巖石里不稳定原子衰变时的放射能。

• inlarge parts of the ocean, the seafloor is made of thick, heavy clay, perfectfor absorbing radioactive decay products.

  在海洋的大部分区域，海床都由厚重的粘土构成，最适合吸收放射性衰变产物。

• mathematical relationship between rn daughter concentrations and ventilation, adhesion and deposition, and radioactive decay was developed in the paper.

  本文给出了氡子体浓度和通风、附着和沉积、以及放射性衰变之间的关系。

• the ash contains minerals such as zircon that can be dated precisely from the radioactive decay of some of their components.

  这些火山灰中含有锆石等矿物，这些矿物中的某些组分允许进行精确的放射性测年（以确定精确的年代数据）。

• what helium is available is depleted in helium-3 relative to what we see in the sun, because most of earth's helium-4 is freshly made via natural radioactive decay of the elements uranium and thorium.

  当氦衰变成为氦-3相对于我们在太阳里看到的那它就可用了，因为地球上多数的氦-4是通过元素铀和钍自然放射性衰变而造成的。

• quantum tunneling is involved in many physical processes, such as radioactive decay and the nuclear fusion that takes place in the sun.

  量子隧穿发生在许多的物理过程中，比如说放射性衰变和太阳上发生的核聚变。

• my first thought was: hey! that looks like radioactive decay or something.

  rhett当时的第一反应就是这些数据看上去像是放射性衰变。

• the process by which an atom changes from an unstable state to a more stable state by emitting radiation is called radioactive decay or radioactivity.

  原子通过辐射由不稳定状态转变为更加稳定状态的过程称为放射性衰变或放射性。

• the process by which an atom changes from an unstable state to a morestable state by emittingradiation is called radioactive decay or radioactivity.

  这种原子通过释放射线从不稳定状态变到更加稳定的状态的过程被称为核衰减或放射。

• his advice to purdue: look for evidence that the changes in radioactive decay on earth vary with the rotation of the sun.

  他向普渡大学的研究者提出建议：寻找地球上放射性元素衰变速率的变化同太阳自转的关系。

• however, some of the minerals contain xenon isotopes unlike those usually produced by radioactive decay of uranium.

  然而，有些含氙同位素的矿物并非如此，是由铀的放射性衰变产生的。