W a b = − Q ∫ a b E → ⋅ d s → displaystyle W_ ab =-Qint _ a ^ b vec E cdot mathrm d vec s The long-awaited game gets a whole new trailer showing off common heroes and villains from the golden age of Dragon https://sanneterlingen.nl/blog/hogedruktrailers-innovatieve-oplossingen-voor-krachtige-reiniging