查询词典 alpha

The oxidation of Ce results in loss of REE, U, and alpha decay product Pb during the alteration of the pyrochlore.

这表明在烧绿石蚀变期间，Ce的氧化导致了稀土元素、U及α衰变产物Pb的损失。

INLINE is appropriate for trade strategies focused on implementation shortfall/arrival price, and for stocks/ baskets with high alpha decay.

INLINE 适合于施行卖空首跌价及最终底价的交易策略，还可以处理ALPHA 烂股及篮子。

With the synthesis of heavy elements approaching the super heavy island,the production cross section becomes smaller and the lifetime of the super heavy element becomes longer,which results in the difficulties for identification of the elements by using conventional alpha decay chain technique.

随着合成的超重元素向超重岛逼近，合成截面越来越小，同时，合成的超重元素的寿命可能相对增长，这对利用α衰变链的传统方法鉴别超重元素是非常不利的。

Alpha decay half-lives of even-even superheavy element s are calculated in the framework of the effective liquid drop model using the combination of constant asymmetry shape description for the mass transfer and the effective inertia coefficient.

利用有效液滴模型计算了偶偶超重核的α衰变半衰期，计算过程中采用了保持碎片体积守恒的不对称形状描述以及有效惯性系数计算Gamow势垒穿透因子。

Alpha decay commonly occurs in elements with atomic numbers greater than 83, but can occur in some rare-earth elements in the atomic-number range of 60 to 71.

发射α粒子的主要是重于铋(lutetium，原子序数83)和从钕(neodymium，原子序数60)到镏(Iutetium，原子序数71)的稀土元素，α衰变的半衰期，从1微秒(10-6秒)到约1017秒。

There are 8.6%~10.91% foreign matter in the sphenes, in which radioactive elements of strontium, cesium and uranium range from 4.26% to 4.58%. The change of structural cell parameters of sphenes is still very little,Δa=-0.0009 nm~0.0041 nm,Δb=0.0018 nm~0.0004 nm,Δc=0.0002 nm~0.0048 nm,Δβ=-0.10°~0.09° with high crystallinity of 99.27%~96.46%. Though, the age of sphene from the Fenghuang Mountain is about 1000 Ma, and experienced 775 Ma~1758 Ma geological evolvement and alpha decay, its crystallinity only decreased 3%, and its crystal shape and structure are still fine, indicating that sphene is of good ability to solidify radioactive elements. Therefore, sphenes are ideal minerals for solidifying nucleus waste.

通过对北祁连牛心山变质杂岩体中榍石(775Ma)和山西凤凰山花岗岩中榍石(1758Ma)的XRD及EDS等测试与研究，结果表明：两地榍石的杂质元素质量分数高达8.6%~10.91%，放射性核素锶、铯和铀的质量分数达4.26%~4.58%；晶胞参数的变化极小，△a=-0.0009nm~0.0041nm、△b=0.0018nm~0.0004nm、△c=0.0002nm~-0.0048nm、△β=-0.10°~0.09°，结晶度仍高达99.27%~96.46%，榍石经过10×10^8a的地质作用，结晶度仅减少了3%，显示榍石固化放射性系列核素的能力较强，虽经历了约775Ma~1758Ma的复杂地质演化及其所含放射性核素的衰变作用，其晶体结构完好，稳定性极高，是值得期待的理想核废物固化矿物。

Alpha iron nanoparticles with about 20~400nm size were obtained in the W/O microemulsion system.

采用油包水的微乳液体系制备了粒度为20~100nm的α-Fe。

These studies reveal that the degradation and the enthalpy change of composites would increase with the doping dose of alpha iron nanoparticles increasing, but the temperature of composites degradation would reduce.

研究结果表明：增加纳米α-Fe的掺杂量能提高PS的降解率，降低降解温度，增大热分解的焓变。

Our research aims to research and design an spectrometer-identificator to simultaneously or separately detect the fluxes and spectra of protons, alpha particles, oxygen and iron ions distributed in space.

为了满足当前空间环境的探测需要，需要研制一台全频道的空间带电粒子探测谱仪，该谱仪能够同时测量空间质子、α粒子和重离子的能谱和通量分布。

A multi-functional spectrometer-identificator is developed to measure fluxes and spectra of protons, alpha particles, oxygen and iron ions in space.

这套空间带电粒子谱探测系统主要有金硅面垒探测器、CsI闪烁体和改进的快响应电子学系统构成，包括ΔE-E望远镜系统和数据的获取及处理系统。

Zhang Xike, Zhang Fusuo, Mao Daru

张西科，张福锁，毛达如

It can be a gift for mothers day.

它可以是一个母亲节礼物。