四維
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Template:釋義
仁義廉恥
是也
四維空間
也,記曰
(
x
1
,
x
2
,
x
3
,
x
4
)
,其軸有四且等價,有互垂直平面
C
4
2
=
6
四維時空
也,實三維空間加一維時間,記曰
(
x
1
,
x
2
,
x
3
,
t
)
.
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