rare elements 稀有元素 ; 罕见元素 ; 罕有元素
rare earth elements 稀土元素 ; 元素 ; 稀土族元素
rare elements mineralized 稀有元素矿化
rare gas elements 惰性气体元素
geochemistry of rare elements 稀有元素地球化学
Light Rare Earth Elements 轻稀土元素
rare earth elements pattern [地质] 稀土配分模式
geochemistry of rare earth elements 稀土元素地球化学 ; 稀土元素地球化学研究
Besides, there are lot of other chemical resources as well as potassium, including salt, bromine, magnesium salt, rare elements and nuclear energy materials.
除钾盐外,海水中还富含海盐、溴素、镁盐等化学资源以及稀有元素和核能物质。
参考来源 - 凹凸棒土对海水中主要离子交换能力的研究·2,447,543篇论文数据，部分数据来源于NoteExpress
Rare earth elements from 4 square kilometers of such areas could meet Japan's annual demand of about 30, 000 tons.
上述区域内每4平方公里范围的稀土元素储量，即可满足日本每年约30000吨的需求。
Rare earth mines often also contain radioactive elements, such as uranium and thorium.
稀土矿山常常也含有放射性元素，比如铀和钍。
This sediment layer is enriched in the rare metal iridium and other elements that are relatively abundant in a meteorite but very rare in the crust of Earth.
这一沉积层富含稀有金属铱，以及其他在陨石中较丰富而在地壳中十分罕见的元素。
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