滞后作用的存在，不但影响降雨过程中的入渗特性，而且影响产流量。
Hystersis influences infiltration characteristics and runoff volume during the process of rainfall infiltration runoff.
但摩擦力(滞后作用)可以保证更平稳地完成油门设定，并缓解在持续挤压弹簧过程中产生的张力。
But the friction (hysteresis) makes it easier to maintain a steady throttle setting, and relieves strain from pushing against the spring continuously.
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