操作弹性是指上升气体速度的最小允许值（负荷下限）到最大允许值（负荷上限）之间的范围。上升气体速度在此范围内变动时，精馏塔能在一定的分离效果下，维持正常操作。
改进的关键在提高准确程度和操作弹性。
The key to the improvement lies in the enhancement of accuracy and operating flexibility.
硫磺回收装置的设备需要有较大的操作弹性。
The equipment for sulfur recovery requires a wide operating range.
试验表明本装置操作弹性大，设备选型与材质选用合理。
Experiments have shown that the manipulatory flexibility of the installation is bigs its equipment and material selections are rational.
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