Muck discharging system of manual hole digging well and muck discharging method
ZHANG ZHIHUA, LUO ZHONGLIANG, SHUAI SONG, LIU WEI, LYU YUXIANG, HUANG YUNTAO, LI JUNFU, HU QIANGQIANG, ZENG FANRONG, HE DENGJI, LI BO
Year of Publication 24.01.2020
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Year of Publication 24.01.2020
Patent