time step selection

例句：

1. 1. In this simulation, the time step selection is crucial for accurate results.
   在这个模拟中，时间步选择对于准确的结果至关重要。
2. 2. The algorithm's performance depends on the time step selection.
   算法的性能取决于时间步选择。
3. 3. The scientist carefully selected the time step to ensure the accuracy of the calculations.
   科学家仔细选择了时间步以确保计算的准确性。