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searching for Delta Beta Phi 1 found (3 total)

alternate case: delta Beta Phi

Lateral earth pressure (5,774 words) [view diff] no match in snippet view article find links to article

{\sin {(\phi '+\delta )}\sin {(\phi '-\psi +\alpha )}}{\sqrt {\cos {(\delta +\beta +\phi )}\cos {(\alpha -\beta )}}}}}{\Bigr )}^{2}}}} K p e = cos 2 ⁡ ( ϕ