rare base

基本解释

Rare earth base alloy with special characteristic make them potential candidates for function materials.
稀土基合金的特性能满足人们在特殊材料上的实际需求。
Precipitated carbide can be become sphere shape and increased its dispersion in surfacing by adding Y-base rare earth alloy.
钇基稀土合金对堆敷金属中析出的碳化物有变质球化作用，增加碳化物在基体中弥散分布的程度。
All but the most rare code base would actually have 114 test cases for the updatePCensus() method (in fact, writing that many test cases for a method could take quite a long time).
除了极少数代码库以外，几乎所有代码库实际上都有 114 个测试用例用于 updatePCensus() 方法（实际上，为一个方法编写如此多的测试用例可能会花费很长时间）。

As with Glacier Girl, Rare Bear came with its own caretakers (and loyal fan base).
FORBES: Lord Of The Warbirds
It has also made Kirgizstan a rare example of a country that has both a Russian and an American military base on its territory—and only 30km (20 miles) apart.
ECONOMIST: Military bases in Kirgizstan