| 摘要 |
<p>Curtains are made from synthetic filaments secured as straggling loops by pricking or water proof adhesives or fusion to support fabrics which are anchored in patterns of horizontal and vertical curtains in sea water near a coastline to inhibit wave and current motions and protect the shore from erosion or to permit establishment of seaweed growth. The filaments should be buoyant, may be hollow, should be made of hydrophobic materials (polyolefins) or impregnated with water repellent materials (silicone polymer oils or emulsions). Cellular floats, pref. coloured, may be fixed at intervals in or along the curtain.</p> |
