... break circulation 恢复循环 break detecto 裂缝探测器 break down agent 压裂液 ...
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drilling at circulation break 干钻
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Stationary blade structure:alloy steel stationary blade to adjust hammer space, can break the circulation layer effectively;
定刀结构：合金钢定刀上下调整锤片间隙，有效的破坏环流层；
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Northern Constabulary said they were concerned the substances were in circulation after the break in on Nairn High Street on Sunday night.
BBC: Warning after 'legal highs' stolen in Nairn
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