n.沥青（晶质）铀矿

Pitchblende, a uranium-rich mineral, is the primary source of radium.
翻译：沥青铀矿，一种富含铀的矿物，是镭的主要来源。
The discovery of pitchblende in Joachimsthal led to the isolation of uranium and later, radium.
翻译：在乔希姆斯塔尔发现的沥青铀矿导致了铀的分离，之后是镭的分离。
Geologists often study pitchblende deposits to understand the geological history of an area.
翻译：地质学家经常研究沥青铀矿沉积物以了解某一地区的地质历史。
Marie Curie's pioneering work with pitchblende marked the beginning of the nuclear age.
翻译：玛丽·居里对沥青铀矿的开创性研究标志着核时代的开始。
Extracting radium from pitchblende is a complex and hazardous process due to the high radioactivity.
翻译：从沥青铀矿中提取镭是一个复杂且危险的过程，因为其具有高度放射性。
Pitchblende, also known as uraninite, has a distinct black color and a characteristic crystalline structure.
翻译：沥青铀矿，也称为铀石，具有独特的黑色和特征性的结晶结构。
The mining of pitchblende requires special safety measures to protect workers from radiation exposure.
翻译：开采沥青铀矿需要特殊的安全措施来保护工人免受辐射伤害。
Early experiments with pitchblende played a crucial role in understanding the nature of radioactivity.
翻译：早期对沥青铀矿的实验对于理解放射性的本质起到了关键作用。
Pitchblende ores are found in various parts of the world, including the Democratic Republic of Congo and Canada.
翻译：沥青铀矿石在世界各地都有发现，包括刚果民主共和国和加拿大。
Scientists analyzing pitchblende samples can learn about the decay chains of radioactive elements within it.
翻译：科学家通过分析沥青铀矿样本可以了解其中放射性元素的衰变链。