名词
中文翻译：主要标准物质
同义词：
['primary standard', 'primary standard material例句：1. The primary standard substance used in the experiment is crucial for the results.（实验中使用的主要标准物质对结果至关重要。）']
例句：
-
1. The primary standard substance used in the experiment is crucial for the results.
实验中使用的主要标准物质对结果至关重要。
-
2.The primary standard substance was carefully analyzed to ensure its purity.
为了确保其纯度，对主要标准物质进行了仔细分析。
-
3.The primary standard substance was used to calibrate the equipment.
主要标准物质被用来校准设备。