Matter element system model of products, soft-hard model of products and structure model of products are given, which are propitious to representation in computer.
文章提出利于计算机表示的产品物元系统模型、产品软硬模型、产品结构模型。
The improved method proposed in this paper is soft-hard thresholding denoising according to mean approximation.
提出的改进方法是利用均值逼近的软硬阈值折中法。
Production experiment indicates that this kind of drill bit has ideal effect in the middle-hard broken formation and the soft-hard interlayer as well as in the gravel formation.
生产性试验表明，该类型钻头对于钻进硬而破碎地层、软硬夹层以及卵砾石地层均具有很好的使用效果。
Production experiment indicates that this kind of drill bit has ideal effect in the middle-hard broken formation and the soft-hard interlayer as well as in the gravel formation.
生产性试验表明，该类型钻头对于钻进硬而破碎地层、软硬夹层以及卵砾石地层均具有很好的使用效果。
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