Investigated were the surface modes propagating along a hollow dielectric slab waveguide with a left handed material (LHM) substrate or cover, respectively.
详细研究了衬底或者覆盖层是左手材料两种情况下，空心平板波导中的表面模。
2
We will cover the new areas with a concrete slab that is separated from the old tower, leaving thin fissures through which natural light will slip inside.
用混凝土板遮住新区域，混凝土板与旧塔相分隔，留下狭长的裂缝，以便光线由此穿透进室内。
3
Mural face material: with cover with paint, wallpaper (spray style), wainscot and thick qualitative slab.