ブラウザの設定でJava Scriptの使用を有効にしてご利用ください。
出典:Wiktionary
From the mathematical formula ∂ V ∂ τ {\displaystyle {\frac {\partial {\mathcal {V}}}{\partial \tau }}} , the partial derivative of vega ( V {\displaystyle {\mathcal {V}}} ) with respect to time (τ), pronounced as "D vega (by) D time".
DvegaDtime (uncountable)
DvegaDtime