öƽ ϴ ҷ ؼ 忡 ְ, ΰ å ַϰ ִ.
ǰ ҷ (zero) ϱ ؼ 䰡 ʿϴ. ü ҷ %̰ ս̶ ǥδ ذ ʴ´.
⼭ ܰ迡 ҷ սDZݾ мϰ Ѵ.
ü ϱ ؼ ܰ踦 ġ ͷ غ. 뺰 ϰ , , 2 ˻ 3κ .
1. ս
1,000, ҷ 51%, ܰ 400/kg, ǰ ߷ 100g/ ϸ
ǰ 1 400/kg×100g/=40/
ҷ 밳, 400/kg×100g/×0.05=2/
ǰ 1 42 ȴ.
ҷ ᷮ 100g/×1,000×0.05=5kg
ҷǰ óġμ,
ϴ սDZ
5kg×400/kg=2,000(2/)
Ŭ ִ սDZ
Ŭ(ҷǰ м ) 30/kg̶ ϸ
5kg×30/kg=150(0.15/)
ٸ 뵵 ̿ϴ սDZ
200/kg( 200 δ)̶ ϸ 5kg×200/kg=1,000 (1/)
̷ 碦 սDZ óġǾ ִ.
2. ս
ҷ 5%, غð 2h, Ǽ ð 10hr, 1 ijƼ, ӷ 3,000/hr̶ ϸ ǰ 1
(2+10)hr×3,000/hr/1,000=36/
ҷ սDZ 밳
36/×0.05=1.8/
ǰ 1 հ 37.8 ȴ.
3. 2 ˻ ս
2 20/, ˻ 10/, ҷ( ģ Ѵ) 2% ϸ ҷ սDZ 밳(++2 ˻)×0.02
(42/+37.8/+301)×0.02=2.2/
( ).
սDZ(ҷǰ ϴ ) հ 밳
2/+1.8/+2.2/=6.0/ Ƶ .
⼭ Ȥ ܼ հ迡 ҷ 5% 7% ؼ սDZ̶ ϸ, 7%
(40/+36/+30/)×0.07=7.4/ Ǿ .
̻ ŷο ۽ ǻͿ ҿ Է ϰ ִ.
<۱ڨ 'öƽ̾' - .>
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