The results show that the method adopted can effectively suppress the radiated noise from cover surface.

结果表明，采用的方法能有效抑制飞轮壳的表面辐射噪声。

youdao

The utility model is characterized in that the middle position of the cover surface is provided with at least one convex part.

其特征在于所述的罩面的中间部位设置至少一个突出部分。

youdao

Closure cover system is one of important parts of landfill site construction, it includes landfill gas discharge guiding layer, geotechnical film, drainage layer and plant cover surface soil layer.

封场覆盖系统是垃圾卫生填埋场建设的重要组成部分，覆盖系统包括气体导排层、土工膜、排水层、植被表土层。

youdao

Drop several seeds over the surface of the pot and cover with a thin layer of vermiculite, a substance that can hold air, water and nutrients.

VOA: special.2009.04.21

Drop the seeds over the surface and cover them lightly with soil.

VOA: special.2009.04.28

As many as twenty tectonic plates cover the Earth's surface.

VOA: special.2009.07.07

Water hyacinth grows into a thick bed of waxy leaves and violet flowers that cover the surface of the lake.

CNN: Flower power threatens Kenya's Lake Victoria

Using a similar approach, the firm wants to cover the surface of a bottle with hydrophilic (water-attracting) and hydrophobic (water-repellent) materials.

BBC: Namib Desert beetle inspires self-filling water bottle

The result is that any coating, such as an antibacterial layer, would be "self-repairing" after small amounts of damage, as the molecular chains just below the damaged layer re-cover the surface.

BBC: Coating heals itself after damage