hades
(anatomy) Situated under, or on the ventral side of, the lumbar region of the vertebral column.
plural of hade
plural of rescinsion
(mathematics) The question as to the value of ∑ₙ₌₁ ᪲1/(n²), the sum of the reciprocals of the squares of the positive integers.
測量技師は掘削前に各鉱脈区間の傾斜角を記録した。
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