这种方法也有它的不足之处。
这种方法有些不足之处，因为设计者给用户做了大量的解释，因此会感觉到有“故意引导证人”之嫌。
The downside to this approach is that the designer is often guilty of " leading the witness" by explaining things in a persuasive manner.
但是这种方法也有不足之处，就在于它对模型有一些弱的假定点估计依赖于误差因子与模型参数的假定，密度估计依赖于误差因子特征函数的假定。
The disadvantages were that this method was based on assumptions on the model: point estimation based on parametric assumption and some properties of error components.
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