我调整了图片的色阶，也使用了加深减淡工具来获得轮廓树的效果。
I adjusted the level of the images as well as used the burn and dodge tool to get the silhouette look.
该方法的内容包括：原子钟一阶模型的噪声分离方法和故障树的故障分离、故障定位方法。
The synergetic method mainly includes: noise-separating method based on time sequence model of atomic clock and malfunction - separating and positioning method based on malfunction-tree.
分别应用根树、B -级数理论、P -根树、P -级数理论推导方法的阶条件。
We use theory of trees, B-series, P-trees and P-series to deduce the order conditions of the methods constructed.
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