在变切削参数的加工工况下，通过对振动信号的采集和频域处理，发现采用单一的自功率谱方法难以有效检测出刀片破损。

Through collecting vibration signal and analyzing it in the frequency domain in the condition of changing parameter cutting, a single self power spectrum is hard to detect tool breakage effectively.

youdao

天纤塑料具有塑料和木材的双重特性，其性能受天纤种类与规格、天纤预处理方法、材料配方及成型加工技术等诸多因素的影响。

The properties of NFP are affected by the sort of natural fiber, the water content of the fiber, the pre treatment method of the fiber, and the composite of NFP.

youdao

谷物加工主要有干碾压、蒸汽碾压和蒸汽压片处理三种方法。

There are three corn process methods, such as dry rolling, steam rolling and steam flaking.

youdao