英语词汇“derrick head block”的翻译、意思、用法、释义-英汉双解词典-注文网

单词	derrick head block
释义	derrick head block [网络] 吊杆头滑车
随便看	public convenience public conveniences public corporation public corporationforest public corporations public correspondence public correspondence service public course public credibility public credit public crest public crisis public danger public data public database public data base Public Data Network public data transmission service public debate public debates public debt public-debt public debt limitation public debt limitations public debt ratio 绿波依旧东流绿波荡漾玉为砂绿深门户绿满山川闻杜宇绿满微风岸绿烟晴绿烟灭尽清辉发绿珠垂泪滴罗巾绿窗春睡轻绿窗朱户 63639 63640 63641 63642 63643 63644 63645 63646 63647 63648