Translations:Vertical Movement Formulas/4/zh

• $V\displaystyle _{Y,1}=0.42$
• Failed to parse (syntax error): {\displaystyle V\displaystyle _{Y,t} = \left (V_{Y,t-1} - \underset{\textrm{重 力}}{0.08} \right ) \times \underset{\textrm{阻 力}}{0.98}}