树脂复合井盖是由高分子复合材料制成，没有任何回收价值。
Resin composite manhole cover is made of polymer composite materials, no recovery value.
介绍国内外有关垃圾的处理方法和处理动态，以及对垃圾的回收价值。
This paper attempts to introduce some methods and trends of garbage disposal accepted in some developed countries and discuss the value of garbage recovery.
本文介绍了电池的种类和组成，对废旧电池中金属可回收价值进行讨论，并对其回收方法进行研究。
This article describes the kinds and components of batteries, investigates the metal recycling values in disused batteries, and proposes several reclamation approaches for the wasted batteries.
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