idle time variance

例句：

1. 1. The company's idle time variance is a key factor in its productivity.
   公司的空闲时间变异是其生产效率的关键因素。
2. 2. The research team found that the idle time variance was significantly reduced by implementing new work practices.
   研究团队发现，通过实施新的工作实践，空闲时间变异显著减少。
3. 3. To improve efficiency, the company is looking into ways to reduce idle time variance.
   为了提高效率，公司正在寻找减少空闲时间变异的方法。