The mechanical design  optimization of a spectrometer for in situ marine radioactivity monitoring
FENG Xian-dong, ZHANG Yun-yan, ZHANG Ying-ying, WU Bing-wei, HOU Guang-li
Shandong Science . 2021, (4): 21 -25 .  DOI: 10.3976/j.issn.1002-4026.2021.04.004