diameter of blasting borehole
diameter of blasting borehole
爆破钻孔直径
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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Taking two of projects as examples, the paper discussed the technology of large diameter borehole blasting applied in the excavation of footing groove in city.
以两个工程为例，介绍了在城镇基坑开挖工程中采用了大孔径深孔爆破技术。
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