想当然的答案可能是：试验和猜测，但这不是一个好办法。
The short answer is that I experimented and guessed! Not an ideal solution.
直至目前为止，而试验对工作台，这不是一个问题。
So far, while testing on the workbench, this has not been a problem.
该试验的局限是，这不是原创的试验，而是一个亚组分析。
The limitation is this is not the original trial, this is a subgroup analysis.
该试验的局限是，这不是原创的试验，而是一个亚组分析。
The limitation is this is not the original trial, this is a subgroup analysis.
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