喷锚混凝土
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spraying anchor concrete
以上为机器翻译结果，长、整句建议使用 人工翻译 。
Although it has success development different producibility bolt in last few year, concrete spraying research have not the obvious break through in anchor spray support.
虽然近几年来已成功研制了各种可伸长锚杆，但锚喷支护中混凝土喷层研究仍未有明显突破。
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