For example, the New York State Department of Environmental Conservation lists some dos and don'ts of composting on its Web site: Do add lime, small amounts of wood ashes or crushed eggshells to the compost pile.
VOA: special.2009.06.23
Books that give a kind of guide to the dos and don'ts of princely behavior.
这种书籍指引君主行为,该做与不该做的事。
We discovered that the quantity dA, under conditions of constant volume and temperature, dA TS And A is u minus TS.
我们发现在恒定的体积和温度下,亥姆赫兹自由能的变化,小于零,is,less,than,zero。,亥姆赫兹自由能A等于内能u减去。
Where the Gibbs free energy, TS u plus pV minus TS is H minus TS.
吉布斯自由能等于,内能u加上pV减去TS,也是自由焓H减去。
So let's -- we'll go to a brand new color, TS define A as u minus TS.
我们用一种新的颜色,定义A等于u减去。
TS And that is G, u plus pV minus TS.
用G来表示,u加pV减去。
TS Let's write it as H minus TS.
把它写成H减去。
TS A is u minus TS.
亥姆赫兹自由能A等于内能u减去。
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