Sharp geochemical change belt reflects the geochemical characteristics of block margin of craton and so on, which reveals the boundary location more effective than geological survey.
地球化学急变带反映了克拉通边缘的地球化学特征，它可比地质观察更有效地揭示克拉通边界的位置。
2
Margin maximization feature weighting is an effective dimension reduction technique, and it is generally based on weighting techniques and similarity measure to construct their objective functions.
间距最大化特征选择技术是一种有效的维数约减技术，一般是基于加权技术和相似性度量构造目标函数。
3
Many design issues may be avoided by focusing on determining the correct level of design margin, the required FPGA resources and effective design partitions.