... petrified rocks and withered stumps 石霜枯木 removal of tree stumps 清除树桩, 消除树根 resecting forceps for lower stumps 下颌残根切除钳 ...
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removal of tree stumps
清除树桩
以上为机器翻译结果，长、整句建议使用 人工翻译 。
It also includes removal of tree stumps and roots in the ditch line that would interfere with operation of ditching machine.
还包括清除在挖管沟范围内影响挖沟机工作的树桩和树根。
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