产品精度高：一次成型即可达到精度要求，无需后加工。
High precision: the required precision is obtained after the shape-forming, without further process.
在测量精度要求较高的场合，直接利用FFT频谱估计显然无法达到精度要求。
It's apparently difficult to meet the requirement of accuracy by using of FFT directly.
采用常规测井解释方法逐点计算单井剖面中各小层的渗透率往往很难达到精度要求。
It is very difficult to calculate this parameter from point by point conventional log interpretation for the layers in a single well section.
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