?? 3~4?? ??? ?? ??? ???? ??? ??.
?? ??? ?? ??? ????? ?????????? 29? ??? ????? ???? ??? ????? ??? ?? ? ??? ????? ??? ? ??? ???? ????? ????.
???? ??? ??? ????(28~29? ??)? ?? ?? ???? ??? ???? ???? ??? ?? ??? ?? ??? ???? ??? ???.
?? “?????? ??? ????? ???? CO(?????) ??? 800~1000ppb??, NO(?????)·NO2(?????) ??? ?? 30~50ppb? ???? ??”? “? ??? ??? ??? ??? ?? ? ?? ????, ??? ??? ???? ???? ??? ??? ??? ?”??? ????.
???? ?? “?? ??? ???? ????? ?? ??? ??? ???? ?? ????”? “???? ???, ??, ??, ??, ??, ??, ??? ???? ‘??’ ??? ?????”? ????.
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