�?�?t ε l ρ l v l + �?�?ε l ρ l v l v l = ε l �?�?τ l + ε l ρ l g �?ε l �?p �?β v l �?v s Be aware: Drillopedia.com can be a submission-centered knowledge-sharing web site. Contributors submit data dependent on their own know-how and experience. Customers must use their discretion when using the data Fracture