Establish the erosive wear mechanism of drilling string in air drilling and put forward that erosion wear is a substantial cause to promote drill string failure.

初步确立了空气钻井钻柱冲蚀磨损机理，提出钻屑冲蚀是促使钻具失效的一项重要原因。

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Hackers who breach and cause substantial harm to critical infrastructure systems would face a mandatory minimum three-year prison sentence if the White House gets its way.

如果白宫的一项法案通过的话，破坏关键性基础设施系统并对其造成重大损害的黑客将面临至少三年的强制性监禁。

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'With a strong and shallow earthquake like this in such a populated area, it could really cause substantial damage,' he said.

他说，在这样一个人口稠密地区发生强烈的浅层地震，真的有可能造成重大破坏。

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Pneumococcal disease is a substantial cause of illness and death.

FORBES: The Government Is Dragging Its Feet on New Vaccines

These factors have combined to cause a substantial dip in thermal coal shipments as well as realizations.

FORBES: Alpha Natural Worth $20 On Exports And Revival Of U.S. Demand

By inhibiting SGLT2, the drugs cause a substantial increase in the amount of glucose that flows out in the urine.

FORBES: Another Blow For Diabetes Pills