The W.H.O.has an influenza warning system in which phase six means that a pandemic is taking place.
VOA: special.2009.06.10
Wirr Minus w irreversible, this is the work which is done to the environment by the system, -Wrev minus w irreversible is always smaller than minus w reversible.
一点提示,不可逆过程中系统,对外界做的功,总是小于,之前我们。
Q So it's just capital W over capital Q, q1 which is to say it's minus all that stuff over q1.
所以效率就是W除以,等于负的所有这些之和除以。
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