英语语法分析

His main tool is a device called a secondary-ion mass spectrometer.

他的主要工具是一种叫做二次离子质谱仪的装置。

One is a spectrometer that measures sunlight reflected from the Earth's surface.

一个是光谱仪，它测量从地球表面反射的阳光。

To measure this, archaeologists use a device called an accelerator mass-spectrometer.

考古学家使用一种被称为加速器质谱仪的设备进行测量。