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7 ore fa · Jean Elaine Grey is a character appearing in American comic books published by Marvel Comics. Created by writer Stan Lee and artist/co-plotter Jack Kirby, the character first appeared in The X-Men #1 (September 1963). [1] [2] Jean Grey is a member of a subspecies of humans known as mutants who are born with superhuman abilities.
1 giorno fa · 壓力係數使用以下公式計算：. \ [ PF = \frac {GP + ATM} {BP} \] 其中：. \ (BP\) 是基準壓力，單位為 psi。. 假設您具有 50 psi 的表壓和 30 psi 的基準壓力。. 壓力係數的計算將為：. \ [ PF = \frac {50 + 14.7} {30} \approx 2.157 \] 壓力係數在從液壓系統到壓力容器和管道系統設計的 ...
