n.微克(重量单位)，百万分之一克

The medication dosage is measured in micrograms to ensure precision.
药物剂量以微克为单位测量，以确保精确性。
A single grain of sand weighs approximately 100 micrograms.
一粒沙子大约重100微克。
The toxicity level of this substance is determined by its concentration in micrograms per liter.
该物质的毒性水平由其每升中的微克浓度决定。
The daily recommended intake of vitamin B12 for adults is around 2.4 micrograms.
成人每天推荐摄入的维生素B12量约为2.4微克。
This high-precision scale can measure weight down to a single microgram.
这个高精度天平可以测量到单个微克的重量。
The pollutant concentration in the water sample was found to be 50 micrograms per liter, exceeding safety standards.
水样本中污染物的浓度被发现为每升50微克，超出了安全标准。
In forensic science, trace evidence like fingerprints may contain only a few micrograms of material for analysis.
在法庭科学中，像指纹这样的微量证据可能只含有几微克的物质供分析。
The hormone insulin is produced by the pancreas in minute quantities, often measured in micrograms.
胰岛素是由胰腺产生的，其产量极小，通常以微克计量。
The sensitivity of the test allows detection of contaminants at levels as low as 0.1 micrograms per cubic meter of air.
该测试的灵敏度能够检测到空气中低至每立方米0.1微克的污染物。
The nutrient density of algae makes it a rich source of vitamins, with some varieties containing hundreds of micrograms of vitamin A per gram.
海藻的营养密度使其成为维生素的丰富来源，某些品种每克含有数百微克的维生素A。