Free radical polymerization is an effective method producing vinyl polymers on a large scale, and more than 70% of them were produced by this way.

自由基聚合是大规模生产各种烯类聚合物的有效方法，在工业生产中，约70 %以上的烯类聚合物都是通过自由基聚合来实现的。

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Gas explosion Accidents imperil the safety of producing and miners' life badly. Erecting seal walls is an effective solution to prevent gas explosion.

瓦斯爆炸事故严重威胁着煤矿的安全生产和矿工的生命安全，在井下搭建密闭墙是防治瓦斯爆炸事故的一种行之有效的方法。

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It proves that laser irradiation is an effective method for breeding of alkaline amylase producing strain.

说明激光辐照是碱性淀粉酶菌株有效的选育方法。

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Crucially, it is an effective method of producing energy.

BBC: Time to encourage biomass growth

While rare earths are expensive to use in producing several products used daily, the drop in demand does not come from an alternate substance that can be as effective for a fraction of the cost.

FORBES: 2012 Outlook: Uncertainty Continues For Rare Earths Prices, China Still Major Player