“铜棒”在英语里为copper bar,其中并无字母“u”,为何在缩写时出现了一个“u”呢? 大家知道,铜的化学元素符号为Cu,而不是“Co”。这是什么原因呢? 化学元素的命名,一般用其英语名称的第一个字母,如B(Boron硼),C(Carbon碳)。如果容易混淆则取前两个字母,如Be(Beryllium铍),Br(Bromine溴)等。当然,这样的命名并不是那样严格的, “Copper rod” is a copper bar in English. There is no “u” in the alphabet. Why did a “u” appear in the abbreviations? We all know that the chemical symbol of copper is Cu, not “Co”. What is the reason for this? The name of the chemical element, generally the first letter of its English name, such as B (Boron Boron), C (Carbon Carbon). If it is confusing, take the first two letters, such as Be (Beryllium铍), Br (Bromine Bromine), and so on. Of course, such naming is not as strict as