应力不能用一个�量描述吗?为什么非用张量描述?把张量表示的所有方�上的力加起来不就是一个方�的力吗? 知乎 Template




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tomski应力不能用一个�量描述吗?为什么非用张量描述?把张量表示的所有方�上的力加起来不就是一个方�的力吗? 知乎 coloring