... 12、isidentifier # 判断是否是非法字符 13、islower # 判断所有字符串是否是小写 14、isupper # 判断所有字符串是否是大写 ...
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using islower 是否小写
The nutrient content of the straw is high. The crude proteincontent of the strow is 7.56%, and the gastricism factor of cellulose(lignin)islower.
两用稻草营养价值高,其粗蛋白含量达7.56%,同时木质素等消化障碍因素较低。
But we haven't yet addressed why, for example, a 2 s orbital islower in energy than the 2 p orbital, or why, for example, a 3 s orbital is lower in energy than a 3 p, which in turn is lower than a 3 d orbital.
但是我们还没有强调为什么,举个例子一个2s轨道能量低于2p轨道,或者为什么,举例来说它依次低于3d轨道,屏蔽一个3s轨道的能量小于3p轨道。
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