Typically, CG smoke is created with particle systems using layers of fields and forces.

典型地、CG烟雾效果是通过粒子系统运用层的场和影响力制作出来的。

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Mechanics, Nuclear Physics, Wave, Oscillations and Optics, Electricity and Thermal Physics, Fields and Forces.

力学，核物理，波，振动，光学，电学，热学，场和作用力。

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The effects of parameters of structure parts and materials, and different arrangements on the leakage fields and forces are analysed.

分析了不同材料、不同结构尺寸和不同排列方式等参数变化对漏磁场和损耗变化的影响。

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It is a forum set up by former President Bill Clinton to encourage leaders from government,business,academia and other fields to join forces to deal with global challenges.

VOA: standard.2009.09.23

Fighters and the security forces are poised inside and outside oil fields.

CNN: In Libya, fears of oil field attack grow

The ban was imposed by the Kimberley Process (KP), the international organisation that polices diamonds, following reports of large-scale killings and abuse by Zimbabwe's security forces in the Marange diamond fields.

BBC: Marange diamond field: Zimbabwe torture camp discovered

Concerns have been raised that ousting life peers, with their expertise in the fields of law, medicine, industry, the voluntary sector, show business and the armed forces, would deprive the Lords of its vital independence.

BBC: Irvine backs appointed Lords