rare earth

n.稀土元素的氧化物

同：	[n.] lanthanide, lanthanoid, lanthanon, rare-earth element

rare and rare earth metal ore deposit
稀有和稀土金属矿床收藏
"When the RAF finally discharge him he will be a very rare bear indeed - we just hope he does not burn up on re-entry to Earth."
“当他最后从英国皇家空军退役时，它将成为一只珍贵的玩具熊。我们只希望它在返回地球时不要烧起来。”收藏
A dark green or greenish - black silicate mineral,Be2FeY2Si2O10,containing several of the rare earths in combination with iron.
矽铍钆矿一种含有纯土和铁混合物的深绿色或淡黑色的硅酸盐矿物，收藏
The lighter rare-earth metals, from cerium to europium in the first half of the series, have more complex crystal structures than the heavier elements
轻的稀土金属，从铈到铕的前一半序列，比重元素具有更为复杂的晶体结构。收藏
It is quite rare that more than two reflections from the earth's surface are clearly readable in seismograms
地面上两次以上的反射很少可从地震图中清楚地分辨出。收藏

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any element of the lanthanide series (atomic numbers 57 through 71)
[同] lanthanide, lanthanoid, lanthanon, rare earth, rare-earth element

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