化学反应器不仅要满足强度条件，以保证在使用中不发生断裂破坏；也要保证刚度条件，使设备在正常操作时的弯曲变形不超过规定的许可范围。
Reactors used in chemical industry must satisfy rigidity requirements to ensure the bending distortion to be controlled within the tolerated range as well as strength requirements to prevent breakage.
该阀通过促动器来操作，促动器对施加在所述促动器上的电位变化作出响应(例如通过变形)，以便打开或关闭所述阀。
It is operated by an actuator that responds (e. g., by deforming) to changes in a potential applied across the actuator to open or close the valve.
该阀通过促动器来操作，促动器对施加在所述促动器上的电位变化作出响应(例如通过变形)，以便打开或关闭所述阀。
It is operated by an actuator that responds (e. g., by deforming) to changes in a potential applied across the actuator to open or close the valve.
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