The base quantities of a given system of physical quantities is a subset of those quantities, where no base quantity can be expressed in terms of the others, but where every quantity in the system can be expressed in terms of the base quantities.
”The base quantities of a given system of physical quantities“这是什么意思还不明白吗？呵呵
【 在 Myarmor 的大作中提到: 】
: 你告诉我，你截的这个图里，哪里说了那七个量是physical quantities?
: 要不怎么说外行一开口就出错。
: 因为他们根本分不清那些细微但根本的差别。
: ...................
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FROM 111.167.210.*