The paper gives the upper-lower limit of a function and draws several deductions by proving them.
给出并证明了一个函数的上下限及其几个推论。
Nine, the upper limit temperature alarm function, temperature alarm function, the upper / lower limit temperature can be set;
温度上限报警功能， 温度下限报警功能，上/下限温度可设定 ；
The critical frequency is the function of damping and can be made as small as possible through selecting suitable damping. However the critical frequency has a lower limit.
临界频率是阻尼的函数，选择合适的阻尼可使临界频率尽量小，但存在下限。
The critical frequency is the function of damping and can be made as small as possible through selecting suitable damping. However the critical frequency has a lower limit.
临界频率是阻尼的函数，选择合适的阻尼可使临界频率尽量小，但存在下限。
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