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The penny: Any copper coin will work.
任何一种铜硬币都可以发挥作用。
youdao
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After the assembly, work break between adjusting steel ring and copper pad's.
装配后调整钢环与铜垫间的工作间隙。
youdao
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After the assembly, work break between adjusting steel ring and copper pad's.
装配后调整钢环与铜垫间的工作间隙。
youdao