... water course 水道,水路,河道,航道,运河 wearing course 耐磨层;磨损层 course of float 浮标测流［路］线 ...
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弹性地板覆盖物。带有聚氯乙烯防磨损层的附聚化合物软木地板砖。规范。
Resilient floor coverings. Tiles of agglomerated composition cork with polyvinyl chloride wear layer. Specification.
火山的外层已经磨损殆尽，直到硬核层完全暴露在外。
The outer layers of the volcano were worn away, until the hardcore stood completely exposed.
当轮胎逐渐磨损、钢丝层渐渐疲劳、胎面老化之时，它的性能也必然减弱。
When the tyre wear, wire layer gradually fatigue and tread aging, it will weaken the performance.
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