short news on international conferences
...壤塘 The West Line Headquarters of Diverting Water from South t 09 国外会议短讯 Short news on international conferences 09 隧道衬砌混凝土敲击回音诊断机 Knocking-echo diagnostic equipment of tunnel lining concrete ..
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short news on international conferences
国际会议的简短新闻
以上为机器翻译结果，长、整句建议使用 人工翻译 。