用“bucket crane”造句大全,bucket crane造句 国语站 造句 1.73W 大中小设置文字大小 travelling bucket craneThis paper introduces the application of frequency converter on10 Ton&43.5 M bridge-type grab bucket crane. The rate of electricity saving reached38.3%, its payback period of investment was within two years. TAG标签:bucket crane 造句 #