Because PTFE has very good lub rication, PTFE is widely used for all kinds of b ridge supports to reduce wear when the bridges expand or contract.
英
美
释义
因为聚四氟乙烯极好的自润滑性。广泛用于各种大型桥梁的支座上,在桥梁伸缩时起到减速小磨擦的作用。
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