实验结果表明，该问题检索模型可以根据用户请求提供具有较高质量的问答对答案。
Experimental results show that the model can provide answers with high-quality according to the users search requests.
为什么要使用金属和合金？许多金属和合金具有高密度，因此被用在需要较高质量体积比的场合。
Why are metals and alloys used? Many metals and alloys have high densities and are used in applications which require a high mass-to-volume ratio.
实验结果表明本文算法在确保重构图像较高质量的前提下，各层图像都实现了较高的压缩比率，对图像的分层压缩与传输的实现具有较高的实用价值。
The experiment result shows that this approach can keep the quality of images , and compress each layer to a good ratio . So it is useful in multi-layered image compressing and transmission.
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