The results showed that the film covering had obvious effect on soil water conservation at the middle stage of corn growth, but neither at the earlier, nor later stage was obvious.

结果表明，地膜覆盖在玉米生育中期保水效果明显，而在生育前期和后期保水效果不明显；

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The heredity of cast irons includes conservation of structure information, composition heredity effect and conservation of physical properties features.

铸铁的遗传性包含结构信息保留、成分遗传效应和物性特征保存。

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The show energy conservation effect of frequency control system is the best.

说明了变频调速系统的节能效果是最好的。

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More than 20 species have been successfully cloned, and there is now talk in some conservation circles of a veritable Jurassic Park-effect becoming essential, as the rate of species extinctions exceeds anything biologists even a generation ago could have imagined.

FORBES: July 5th: Interdependence Day

The WWF said poaching and trafficking of body parts was having a devastating effect on the wild populations of some species, setting back decades long conservation efforts.

BBC: Google cash buys drones to watch endangered species

"In terms of energy efficiency and conservation, just installing a smart meter isn't going to have much effect, " says Greg Guthridge, a smart-grid consultant with Accenture.

FORBES: Energy