disjoint elements

In this paper, the distribution, abundance and occurrence states of U in mantle xenoliths are studied by ~(235)U fission track method, and the movement of mantle fluids is revealed by means of U-tracer, which is a representative of incompatible elements in the mantle.

在此基础上进一步把铀作为不相容元素群的示踪剂(tracer),指示地幔流体在深部地幔岩中的活动轨迹。

On the contrary,the second type of peridotite,which contains metamorphic tectonic fabric,highly depleted incompatible elements(e.

其中,第Ⅱ类橄榄岩的化学成分非常局限,高度富集Co,Cr,Ni,贫乏Ti,V,Cu,Y;亏损不相容元素(K+Na,Al。

The fractionation and evolution of some incompatible elements in pegmatite veinNo.

对三号伟晶岩脉某些不相容元素的分异与演化进行了研究，结果表明，岩浆作用中的不相容元素Nb、Ta的不相容性在花岗伟晶岩浆演化过程中已大大减弱，Nb、Ta独立矿物如铌钽铁矿、细晶石等能形成于伟晶质熔体的各个演化阶段。

It is pointed out that the metasomatism,melting of the previously formed minerals,and fill-in action of the mantle liquid rich in incompatible elements resulted in the formation of several new kinds of minerals existing in kimberlite in China and South Africa,including yimengite series,mathiasite series,K-Cr priderite,ar.

指出富含硅酸盐不相容元素的地幔流体交代、熔融先期形成的矿物以及充填作用，形成了近年来我国和南非金伯利岩中发现的多种新矿物相，包括沂蒙矿系列、蒙山矿系列、Ｋ－Ｃｒ柱红石、阿玛科矿、Ｚｒ－Ｔｉ氧化物（锆钛矿）、ＲＥＥ－Ｔｉ氧化物（铈钛矿）等。

Solving R-reusable permutation of inexactly distinct elements with exponential generating functions is quite effectual.

指母函数是求解不尽相异元素r可重排列问题的有效方法,当求出对应问题的指母函数后,指母函数中各xr项的系数的规范化就成了问题求解的关键。