There are problems of urban decay and gang violence.
存在都市衰败和黑帮暴力问题。
If left untreated, decay goes deeper and deeper into the tooth.
如果不及时治疗，蛀牙会越来越深。
The essential condition for the decay of the vacuum is the presence of an intense electric field.
真空衰变的基本条件是存在强电场。
Geological dates are usually obtained by using the rates of decay of various radioactive elements found in minerals.
地质年代通常是通过矿物中发现的各种放射性元素的衰变率来获得的。
The decay of Christian belief and practice is not a loss but rather an opportunity for poetry in Crane.
在克莱恩看来，基督教信仰和践行的衰败，并不是损失，反而是诗歌新生的机会。
Attack by scavengers and bacteria, chemical decay, and destruction by erosion and other geologic agencies make the odds against preservation very high.
食腐动物和细菌的攻击、化学性腐烂，以及侵蚀和其他地质作用的破坏，导致无法保存的可能性非常大。
Both it and its companions would then decay almost instantly into a plethora of less fleeting bits, some of which could be detected.
然后，它与它的伙伴们将会几乎在瞬间衰变为大批寿命更短的微粒子，其中有一些能被检测出来。
These minerals can be dated by radioactive decay techniques because of the very small quantities of radioactive trace elements they, in turn, contain.
这些矿物可以用放射性衰变技术测定年代，因为它们所含的放射性微量元素非常少。
He found that the length of time it takes a sound's echo to decay is determined by the absorption of the sound's original energy by surrounding material.
他发现，声音回声衰减的时间长短取决于周围物质对声音原始能量的吸收。
A nucleus that large cannot be stable, but it might be possible to assemble one next to a vacuum for long enough to observe the decay of the vacuum.
这么大的原子核不可能是稳定的，但在足够长的时间内，在真空附近组装一个原子核以观察真空的衰变是可能的。
The radioactive displacement law of Fajans and Soddy was formulated to describe the products of alpha and beta decay.
法扬斯和索迪的放射性位移定律被用来描述α和β衰变的产物。
Radon comes from radium decay.
氡来自镭的衰变。
For math geeks, this is standard exponential decay.
对数学狂人来说，这是标准的指数衰减。
It is resistant to decay but not to Marine borers.
它抗腐烂，但是不抗海洋蛀虫。
The antineutrons escape the atmosphere and then decay into antiprotons at much higher altitudes.
反中子逃离大气，然后在高得多的区域衰变为反质子。
Any instability or orbital decay can be corrected with thrusters and an onboard engine.
任何的不稳定和轨道衰变都能通过推进器和机载发动机修正。
Alpha particles are these helium nuclei, and they are the result of radioactive decay.
阿尔法粒子是氦核，它们是放射性衰变的产物。
Some byproducts of the nuclear fission are themselves radioactive.These decay, producing heat.
有些核裂变产生的副产品自身具有放射性。这些物质的衰变，也在产生热能。
Such facilities could search for other hypothesized phenomena such as the extremely rare decay of protons.
这样的装置有助于发现证实更多的假说现象，如质子的稀有衰变。
But the finding is intriguing because the natural process of memory decay remains shrouded in mystery.
这个发现还是很耐人寻味的，至今记忆的自然衰退过程依旧笼罩在神秘之中。
With modularity, required updates are centralized to the single core building block, overcoming test script decay.
通过模块化，所需的更新被集中到一个单一的核心构件块中，克服测试脚本的衰退。
Heat from the decay of naturally occurring radioactive elements could keep a planet warm enough for water.
放射性元素在自然衰败过程中所产生的热量能使星球上的水维持液态形式。
Their findings strengthened the argument that the strange swings in decay rates were caused by neutrinos from the sun.
他们的发现使这种衰变速率的反常变化是由太阳中微子造成的论点得到了加强。
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。
Check back in a few hours to compare the rate of decay and the resulting smells.
几小时后，比较两者的腐烂速度和气味。
Giant detectors built to look for a hypothetical form of radioactivity in which protons decay never found such a thing.
为了探测质子衰变放射性的假想形式，人们修建了巨大的探测器，但这些探测器从没发现这种东西。
As radon progeny decay, they emit radioactive alpha particles and attach to aerosols, dust and other particles in the air.
氡子核在衰变时发射出放射性阿尔法粒子，这些粒子可附着于空气中的浮质、灰尘及其它粒子。
It is produced from radium in the decay chain of uranium, an element found in varying amounts in all rocks and soil.
它产生于铀衰变链中的镭，而铀是所有岩石和土壤中都能找到的一种元素，含量各不相同。
At an intermediate scale, however, they areoccasionally amplified to become observable, for example when wemeasure radioactive decay.
在中间尺度上，量子效应偶尔会被放大以致可被观察到，例如我们在测量放射性衰变的时候。
At an intermediate scale, however, they areoccasionally amplified to become observable, for example when wemeasure radioactive decay.
在中间尺度上，量子效应偶尔会被放大以致可被观察到，例如我们在测量放射性衰变的时候。
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