Quantitative analysis of the content of nitrogen and sulfur in coal based on laser-induced breakdown spectroscopy: effects of variable selection
2020 ◽
Vol 22
(7)
◽
pp. 074005
◽
2017 ◽
Vol 32
(6)
◽
pp. 1166-1176
◽
2018 ◽
Vol 143
◽
pp. 12-17
◽
2008 ◽
Vol 18
(1)
◽
pp. 222-226
◽
2018 ◽
Vol 21
(3)
◽
pp. 034012
◽