这个原则因此产生了：在燃油可以使用之前对其搬运中的“所做的事”必须恢复原状。
The principle thus appears: what is done to the fuel in handling must be undone before it can be used.
其优点是用本方法生产的面包口感味道好，具有独特风味，弹性大，挤压后仍能恢复原状，保质时间长。
The bread produced with this method has good taste and special flavour, and high elasticity and long shelf life.
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