A new mathematical method of valve theoretic movement rules according to the CAM lift data was introduced.

介绍了一种根据凸轮升程数据求取气门理论运动规律的计算方法。

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This paper studied 4-axis CNC spiral bevel gear machine movement rules, and set up machine machining coordinates.

研究了四轴数控螺旋锥齿轮铣齿机的运动规律，建立了铣齿机加工坐标系。

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It is important to master movement rules of overburden rock layers to control roof rationally in special production and geological conditions.

在工作面特定的生产技术和地质条件下，掌握工作面上覆岩层的运动规律，对合理控制顶板非常重要。

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"That helps the sport grow. If we just stayed all our separate little ways, the sport would never get momentum, so it's basically a national movement where we have one governing body kind of governing all the rules so we all play by the same rules."

VOA: standard.2010.08.03

The work and pensions secretary said the European Commission had "got to understand" that "people shouldn't use the free movement rules just to travel around, looking for the best benefits they can get".

BBC: UK Politics

Some 30 states allow raw milk sales for human consumption, according to the Food and Drug Administration, although federal rules prohibit the movement of these products across state lines.

WSJ: One Small Win for Raw Milk

Special clauses were also inserted to cater to a particular western European anxiety: the prospect that the EU's rules on free movement of people and labour will lead to a flood of poor Muslim immigrants heading west.

ECONOMIST: A date with Turkey | The