1.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^...
2.Double think is, having two opposing belief at once, beliving that both are true. To deliverately belive in lies,while knowling they are false.Example of this everyday life. Oh I need to be pretty,to be happy. I need surgery to be pretty. I need to be thin...