他们使用了一种相对较新的 X 光技术来检测矿石样品。
They had been using a relatively new technology called X-ray spectroscopy, and they were using this to examine an ore sample.
但获得(H . pylori)的样品相对不易，它需要对胃部的活解剖。
But getting a sample of H. pylori is relatively difficult, as it requires a stomach biopsy.
这种新型玻璃合金的首批样品是相对而言很小，直径仅一厘米的玻璃棒。
The first samples of this new metallic glass were relatively small glass rods just a millimeter in diameter.
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