Disc spring load-deformation characteristics can directly affect pneumatic DTH hammer system vibrations.

碟形弹簧的载荷变形关系直接影响潜孔锤系统振动特征。

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At the same time, the profession is trying to hammer out a better system of producing accounting principles.

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"There's concern that you're hitting the system with a hammer, " says Buse.

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