control field length

例句：

1. 1. The engineer controlled the field length to optimize the yield.
   工程师控制了场长以优化产量。
2. 2. The control field length was crucial for the experiment's success.
   控制场长对于实验的成功至关重要。
3. 3. The team adjusted the control field length to match the weather conditions.
   团队调整了控制场长以适应天气条件。