预应力筋的预加应力并不是常量，而是瞬时或随时间增长而逐渐减小，预应力筋这种预加应力减少的现象称为预应力损失。
The prestress of prestressed reinforcement is not constant, but gradually reduces with time growth. This reduction of prestress is called prestress loss.
预应力筋的预加应力并不是常量，而是瞬时或随时间增长而逐渐减小，预应力筋这种预加应力减少的现象称为预应力损失。
The prestress of prestressed reinforcement is not constant, but gradually reduces with time growth. This reduction of prestress is called prestress loss.
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