It was shown by the results of the study that PF resins and UF resin with nano-SiO2 suspending in improved the dimensional stability and the hardness of wood.

研究结果表明了纳米二氧化硅对提高三倍体毛白杨木材的尺寸稳定性和硬度等性能具有潜在的功能。

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When the slurry is used in waterborne wood coatings, it can distinctly promote the hardness of paint film.

将制备的浆料加入水性木器漆中，可以明显提高漆膜的硬度。

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The raw material we use is the high grade wood with fiber of high density and strong hardness.

本公司采用进口优质木种为原材料，纤维密度高、硬度强。

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But while the glued paper is said to have a wood-like hardness, the arrangement of the layered paper grain will require special consideration for certain design layouts (this can affect other types of 3-D printers as well).

CNN: Staples announces in-store 3-D printing service