Dirac delta function
(mathematics) A function of one real argument, whose value is zero when the argument is nonzero, and whose integral is one over any interval that includes zero.
Not dyslexic.
(chemistry) dithionite
A type of ribbon attached to the hilt of a sword, originally as a way of fastening it to the wrist, but later chiefly as an ornament.
ディラックのデルタ関数は、多くの物理学の問題で点源を表すために用いられる。
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DiQt
Free
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