Additionally, samples from glacial and non-glacial sand and gravel aquifers consistently had more occurrences of trace elements in groundwater than samples from other aquifers.
There exists some algorithms for frequent episodes mining such as window-based and non-overlapped occurrences based methods.
以往的研究提出了一些挖掘算法，包括基于滑动窗口和基于非重叠出现的方法。
3
Other sound effects are used to suggest action or occurrences that are not seen in the image: such non-synchronous sound can be Used to expand the dimensions of what is seen.