L = ∮ p n ⋅ k d S , displaystyle L=oint pmathbf n cdot mathbf k ;mathrm d S, D p = ∮ p n ⋅ i d S , Y = ∮ p n ⋅ j d S . displaystyle begin aligned D_ p &=oint pmathbf n cdot https://garage-storage-lift42086.targetblogs.com/33923242/the-greatest-guide-to-garage-ceiling-lift