通过改变送粉激光熔覆过程中的扫描速度、送粉速率、基体预热温度等工艺参数，获得了单道激光熔覆层。

Single pass laser surface of the specimens using powder feeding method were obtained by varying the powder feeding rate and the preheating temperature of the substrate.

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温度是支配凋落物分解速率的重要环境因素，它甚至能改变凋落物分解的动力学。

Temperature is a well-established environmental factor governing litter decomposition rates, and even can alter litter decay dynamics.

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通过采用真空烧结和氢气气氛烧结、改变烧结升温速率和烧结温度，对比了烧结件的烧结质量和烧结收缩等情况。

The sintering quality and shrinkage of the sintering parts were compared under vacuum or hydrogen atmosphere and different sintering temperature and heating rate.

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