These were succeeded by anchor and chain-cable forges, where sledgehammers were dinging upon iron all day long. 接着是生产锚和锚链的铁工厂,长柄的大铁锤整天叮叮当当地抡打着铁块。
Using the excavating map overlap method and combining with the practical design and application experience of excavator, on the basis of analysis the dinging performance of excavator, preliminary evaluation criteria has been established. 用挖掘图谱叠加分析方法,并结合挖掘机实际设计和使用经验,在分析挖掘机挖掘性能的基础上,运用图谱叠加法评价挖掘性能。