<u> means "unarticulated" text that is typically "underlined".
concepts/concept-121-12-14.yaml: under {{sinusoidal conditions, IEV:131-11-28}} in a medium where the {{phasors, IEV:131-11-26}} <u>stem:[*D*]</u> and <u>stem:[*E*]</u> representing respectively the {{electric flux density, IEV:121-11-40}} and the {{electric field strength, IEV:121-11-18}} are linearly related, complex quantity stem:[ε]~ r~ defined by the relation
concepts/concept-121-12-14.yaml: <u>stem:[*D*]</u> = stem:[ε]~0~stem:[ε]~ r~ <u>stem:[*E*]</u>
<u>
means "unarticulated" text that is typically "underlined".