查询词典 rare earth

Geochemistry of rare and trace earth elements of wall rocks and ores from the Obotu deposit shows that mineralization of fluorite can be divided into two stages, i.e., metasomatism and space_filling.

文章通过分析该矿床岩、矿石的微量元素和稀土元素，揭示出萤石的成矿作用可分为2个阶段，即交代作用和充填作用。

The ironrich and silicapoor liquids, commonly different from the low iron and silicarich liquids, are rare on the earth surface. There are not the same, which can be used to explain their petrogenesis at present.

在自然界中与普遍发育的具Bowen趋势的低铁富硅熔体不同，高铁贫硅岩浆非常罕见，也没有直接的现代类比物可以对比以解释其岩石成因。

We know the tiger is very rare in our earth.

我们知道老虎是很珍贵的。

Carbon, which is very important part of living thing on the earth, is rare on the moon.

碳是地球上生物的一个非常重要组成部分，在月球上非常稀少。

Carbon, which is a very importantpart of living things on the earth, is rare on the moon.

碳是地球上生物的一个非常重要组成部分，在月球上非常稀少。

Carbon, which is a very important part of living things on the earth, is rare on the moon.

碳是地球上生物的一个非常重要组成部份，在月球上非常稀少。

From sturgeon to taimen, giant freshwater fish are some of the most rare and vulnerable species on Earth.

从鲟鱼，以鱼，巨淡水鱼是一些最稀有和脆弱的物种在地球上。

Irst Solar's growth is confined by the tight global supply of tellurium, an exceedingly rare element on earth.

SLR的成长受限于碲的产量，而碲是一种稀有元素。

Troilite, rare on earth but a common mineral found in meteorites, was synthesized by arc-discharge method for the first time.

首次用电弧放电法合成出在地壳中罕见而在陨石中却常见的矿物——陨硫铁。

Noctilucent Clouds or Polar Mesopheric Clouds: This is an extroadinarily rare cloud formation that occurs out on the verge of space between 82km to 102 km from the earth's surface.

夜光云层又被称为极地中层云：这种云层极其罕见，只形成于距离地表82-102公里的大气空间边缘部位。

We will see more and more activist government policies that distinguish economic activities according to the nationality of the actors.

我们将看到越来越多激进的政府政策，这些政策根据企业的国籍来区分经济活动。

If we can prove the independence of an axiomatic system, then we can guarantee the conciseness of this system, ie.

如果能够证明某个一阶谓词系统的独立性，那么就能够保证该系统的建立是精炼的，即没有任何一条公理或推理规则是多余的。