field spectroscopy

例句：

1. 1. Field spectroscopy is a technique used to analyzethe chemical composition of soil samples.
   田野光谱学是一种用于分析土壤样本化学成分的技术。
2. 2. Infield spectroscopy, scientists usespecialized equipment to collect data from the ground.
   在田野光谱学中，科学家们使用专门的设备从地面收集数据。
3. 3. The field spectroscopy method has been proven tobe highly accurate in determining the mineral contentof rocks.
   田野光谱法已被证明在确定岩石矿物含量方面高度准确。