2.called the Pledge 所謂的承諾 prestige / the respect and admiration that somebody/something has because of their social position, or what they have done 威信;聲望;威望 accomplished very good at a particular thing; having a lot of skills 才華高的;技藝...
3.基本假設:沖擊波是球面波,爆炸中心是該球面波的球心 數據:爆炸火球半徑R的時序照片R(t) 量綱分析: (1) 相關物理量:能量E,時間t,介質密度D,火球半徑R (2) 基本單位: (a) L 長度量綱 (b) T 時間量綱 (c) M 質量量綱 (3) 量綱列表: (a) [R] = L (b) [E] = ML^2/T^...