Tool steel is generally purchased in the annealed condition. Sometimes it is necessary to rework a tool that has been hardened, and the tool must then be annealed. For.

退火。退火工艺的组成为把钢加热到一定温度并保持一段时间，通常再缓慢冷却。退火是为了产生均匀化从而建立起有一致的特有性质的标准均匀化组织。

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To further uproot the idea of video as a faithful recording tool, Fang would usually rework the sequence of events in her videos through editing.

方璐往往通过后期制作的干扰和重设事件发生的时间次序，进一步放弃了录像作为一种忠实的、在场的记录性工具的主导作用。

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