The new prosthesis is a mobile-bearing device, which relies on bearings that move across a surface of polyethylene, a flexible plastic.
这种新的假体是一个移动-支承装置，它所依赖的支承点可以在一个聚乙烯的弹性塑料表面移动。
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Freshwater tank: We think the best tanks are made of thick-walled, high-density polyethylene, but flexible tanks can work in an odd-shaped or inaccessible space.
Waterproof coiled materials of SBS are a flexible felt of polyester fibre as casing, SBS modified asphalt as coating and polyethylene film as antiseizing separation layer.