结果表明，外加水平波磁场可以在搅拌区域内产生电磁力，使钢液在水平方向形成旋转流动，而在垂直方向形成不均匀流动。

The results showed that the traveling magnetic field can generate the magnetic force in the s EMS region, which makes molten steel whirl in level section and flow unevenly in verticals...

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当传感器发现粉尘浓度达到了临界水平，就有一定的电荷促使该材料发出除尘波越过其表面。

Sensors detect when dust concentrations reach a critical level and then an electric charge energises the material sending a dust-repelling wave across its surface.

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波伦先生向人们展现了不同水平的有机食品。

Mister Pollan shows that there are different levels of organically produced food. Some big farms grow organic food with methods similar to industrial farms.

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