关于这张图
The Gamma Ray Spectrometer (GRS) is installed by technicians on the Mars Odyssey Orbiter in the Spacecraft Assembly and Encapsulation Facility 2 (SAEF 2).; The orbiter will carry three science instruments: the Thermal Emission Imaging System (THEMIS), the Gamma Ray Spectrometer (GRS), and the Mars Radiation Environment Experiment (MARIE). THEMIS will map the mineralogy and morphology of the Martian surface using a high-resolution camera and a thermal infrared imaging spectrometer. The GRS will achieve global mapping of the elemental composition of the surface and determine the abundance of hyd…
