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| 扩张式扩眼器 | |||
| 扩孔钻头以硅酸盐和氧化钙为主要成分的混合物。利用水化反应产生的膨胀力传递到物体上，实现无声响、无振动地破碎混凝土和建筑物等 | |||
| 扩张式绞刀; 可调径绞刀 | |||
| 扩展式扩大器; 扩张式铰刀; 扩展式铰刀; 可调径铰刀 | |||
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expansion reamer : 5 phrases in 1 subject |
| Technology | 5 |
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