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radioactive adj.【物理學】放射性(引起)的。n.-activit...

radioactive dating

The cost for the deposition of the waste depends also upon the volume of the storage cavities and the maximum allowable radioactive concentration of the waste . 廢料處理費用還取決于貯存空穴的容積和允許的廢料最大放射性濃度。

In the deep mantle the highest possible concentration of radioactive materials is limited by the condition demanding temperatures below the melting point . 在地幔深部,放射物質最高的可能濃度受溶點以下的溫度條件所限制。

From their work emerged the picture of radioactive decay that is still valid-a violently disruptive explosion of a single atom . 根據他們的工作,展現出至今仍然成立的關于放射性衰變的圖象--單個原子的強烈的分裂性爆炸。

Heat transfer coefficient,comprising convective and radioactive components may strongly depend on the actual flow enthalpy and density . 由對流和輻射兩部分組成的熱交換系數極大地依賴于實際活動的焓和密度。

Practically every atom had its origin in the tiny violence of a radioactive disintegration some time within the past few billion years . 實際上每個原子都來源于過去幾十億年中某一時刻放射性分裂的微小激變。

A person handling radioactive materials has no way of telling whether he is touching something too “hot“ for safety . 一個處理放射性物質的人卻無法斷定他是否正在接觸某種太“熱”的危及安全的東西。

Because of the continuous decay, the quantity of radioactive material and the rate of emission of radiation decrease steadily . 由于連續衰變的結果,放射性物質的數量,輻射發射率都逐漸下降。

Very few alpha particles from radioactive sources can travel more than 1 to 3 inches in air before being stopped . 在空氣中從放射源放出的粒子在停止以前只有很少能穿過13英寸的距離。

Petrographically and mineralogically similar rocks quite often have different concentrations of radioactive elements . 巖石學礦物學上類似的巖石,其放射性元素豐度卻往往有所不同。

In this experiment, a soil sample was incubated with a dilute soup of radioactive organic molecules . 在這個實驗中,一份土壤樣品同一份含放射性有機分子的稀釋濃稠液體一起培養。

Radioactive and other hazardous materials present health and safety problems in increasing numbers of countries . 放射性及其它有害物質將給越來越多的國家帶來健康和安全問題。

Each radioactive nucleus of a particular kind is responsive to a fixed decay probability per unit time . 每個特定類型的放射性原子彈對單位時間內一個固定的衰變幾率作出響應。

A radioactive particle moving in a blood stream causes transient changes of dose rate near its path . 當一個放射性物質在血流中移動時在它的路徑附近引起劑量率的瞬間變化。

Tritium is radioactive and is believed to be the main source of the major traces of 3he found in the atmosphere . 氚是放射性的,并且確信是大氣中痕量3He的主要來源。

In its early stages the rain was augmented by the small water droplets still descending from the radioactive cloud . 開始時,從放射性云下沉的小水滴使雨勢增大。

The radioactive cloud reaches a height of several miles before spreading out abruptly into a mushroom shape . 放射性云在上升達幾英里高度后才猛然散開成蘑菇狀。

The storage of radioactive waste in the subsurface is a possible solution of their ultimate disposal . 放射性廢料的地下貯存是徹底處理它們的一種可行解決辦法。

Since radioactive iodine decays rapidly, virtually all radiation ceases within a few weeks . 由于放射性碘能迅速破壞,因而實際上幾星期內放射性就全部結束了。

It had been used for practical ends, to identify elements and to unravel radioactive decay chains . 已將其用于實踐的目的,去鑒別元素和闡明放射性衰變系。