例句與造句

1. 4 . based on energy equivalence and power equivalence method separately , the additional damping ratio formula of nonlinear viscous damper is derived and it ' s suggested power equivalence method is more suitable for nonlinear viscous damper . then the transforming equality between actual and spectra velocity of structure is derived , based on which , the additional damping ratio equation is revised
   4 、分別采用能量等效方法和功率等效方法，推導了非線性粘滯阻尼器的附加阻尼比公式，指出功率等效法更適合于非線性阻尼器；推導了結構的實際速度和譜速度之間的轉換公式，基于該轉換公式修正了功率等效方法下的附加阻尼比計算公式。
2. It's difficult to find spectrum velocity in a sentence. 用spectrum velocity造句挺難的