This is to ensure that no permanent strain occurs to the load cell which could affect its calibration.

这是为了确保没有永久应变发生负载细胞，这可能会影响其校正。

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When the load is removed, the elastic portion of the strain is recovered, but the plastic part (slip and creep) remains as permanent set.

当荷载被移走时，应变的弹性部分恢复，但塑性应变部分(滑移和徐变)却会永久呆留。

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As any parents of a young child who is a problem sleeper will confirm, permanent tiredness and constant irritability can put a huge strain on your relationship.

对于任何家里有不肯好好睡觉的幼童的父母，他们都会证实这一点：长期的疲倦和持续的烦躁会让你的感情关系承受巨大压力。

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Its primary Asian rivals, with the exception of Singapore, are almost genetically resistant to permanent migration from those outside the dominant ethnic strain.

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