propellant with negative burning rate pressure exponent

例句：

1. 1.The team's performance was negative due to the lack of experience.
   由于缺乏经验，该团队的表现是负面的。
2. 2.The weather forecast indicated a negative trend for the weekend.
   天气预报显示周末有不利的趋势。
3. 3. The company's financial report showed a negative balance in its accounts.
   公司的财务报告显示账户中有一笔负余额。