A radioactive transuranic element; discovered by bombarding curium with alpha particles.

一種放射性超鈾元素欧美野外激情人成视频在线观看，在用α粒子轟擊鋦時(shí)發(fā)現(xiàn)a一级毛片精品免费视频A片。

"For the invention and development of the cyclotron and for results obtained with it, especially with regard to artificial radioactive elements"

"對回旋加速器的發(fā)明和發(fā)展午夜性福利免费，并以此獲得有關(guān)人工放射性元素的研究成果"

The clinical curative effect , assessment and classification of radioactive lung damnification, negative effects and life quality were observed.

以腫瘤客觀療效、放射性肺損傷的評定及分級91绿帽人妻国内、毒副反應(yīng)情況人人操人人操人人人干、生活質(zhì)量狀況為指標(biāo)進(jìn)行臨床療效觀察。

The decay of ~(99m)Tc source was used to verify experimentally that in the measurement of the number of atoms of a radioactive isotope in a sample at time t_0, the error introduced through the inaccuracy of its decay constant can be reduced to a much smaller value by the careful selection of the time of measurement or measurements of its radioactivity at around one life time (1/λ) after t_0 and doing the calculation.

本文用~(99m)Tc源的衰變實(shí)驗(yàn)證明了：在測量一個(gè)樣品中在t_0時(shí)的一種放射性同位素的原子數(shù)時(shí)只需精心選擇一次或多次測量其放射性的時(shí)刻在t_0后約該同位素的一個(gè)壽期(1/λ)欧美好色aaa，并進(jìn)行計(jì)算伊人一级得黄片，則由它的衰變常數(shù)或其半衰期(T1/2)的不準(zhǔn)確性而引進(jìn)的誤差可以被降低到較小值。

The core of this model is a function called a stretched exponential relaxation, which is similar to the decay curve of a radioactive material.

這個(gè)模型的核心是延伸型指數(shù)函數(shù)的松弛效應(yīng)爱爱网址，就像放射性物質(zhì)的衰變曲線一樣黄色视频小说蜜臀在线观看。

It is major work to present the tectonic time duration system of the strain rate method, which is an original exploration.(1) Principle: Its basis is the stress and strain rule depending on strain capacity in steady-state stress field, but not the radioactive decay law depending on radiation dose in invariable radiation field. This can be simplified as a process of differential stress-strain rate-strain capacity-time duration calculating.

工作重點(diǎn)是梳理出應(yīng)變速率法構(gòu)造時(shí)限定年系統(tǒng)，屬原創(chuàng)性探索：①原理：不是基于放射性核素衰變規(guī)律911自拍，而是基于應(yīng)力應(yīng)變規(guī)律国内自拍53页；不取決于恒定輻射場的輻射劑量，而取決于穩(wěn)態(tài)應(yīng)變場的應(yīng)變量4455www看片，可簡括為差異應(yīng)力-應(yīng)變速率-應(yīng)變值量-計(jì)算時(shí)限的求索過程。

It is the product of radioactive decay and is used in helium dating.

氦是由放射性衰變形成的人人肏人人干人人肏，可用于氦年代測定法免费中文字幕爱爱小视频。

A highly unstable radioactive element (the heaviest of the halogen series); a decay product of uranium and thorium.

一種極不穩(wěn)定的放射性元素，鈾和釷腐爛的產(chǎn)物搜索超碰在线操人妻。。

A highly unstable radioactive element (the heaviest of the halogen series); a decay product of uranium and thorium

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Radium does not occur free in nature but occurs in natural ores such as pitchblende as a disintegration product of radioactive decay of heavier elements, including uranium.

在自然界鐳不存在游離狀態(tài)欧美精品理论片大全，但存在于天然礦石中，如瀝青鈾礦国产精品美女AV，是更重元素放射性衰變的產(chǎn)物网站视频免黄片大全皮毛大全。