过去，护路设备占用错误轨道或阻塞相邻车道是造成重大事故的原因。
The presence of MOW equipment either occupying the wrong track or fouling an adjacent track has been the cause of serious accidents in the past.
有数据表明，男性新手在造成重大事故上占有比其它组别都要高的比例。
Statistics show that newly licensed teenage boys cause a higher number of serious automobile accidents than any other group.
高速铣刀在加工过程中的主要载荷离心力过大可导致刀体破碎而造成重大事故。
A very serious accident could result from the large centrifugal force of the high speed milling tools. The theoretical model of milling force is established.
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