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closed circuit grouting

techn. 环流式灌浆; 闭路压力注浆 (法); 循环式闭路灌浆 (法); 闭合压力灌浆
closed-circuit grouting
centr. 闭路循环灌浆
géolog.ingén. 循环式闭路灌浆; 闭合压力灌浆