另外，通过在实际生产温室中做现场试验，比较两种覆盖下温室的保温性能。

In addition, the insulation performance of double-layer inflated film and single-layer film greenhouse were compared though measurement in real greenhouses.

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但路易斯安那理工大学的研究人员发明了一种引人注目的新材料，可减少水泥生产温室气体排放的90%。

But researchers at Louisiana Tech have invented a remarkable new material which could cut greenhouse gas emissions from cement production by 90 percent.

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食品生产有许多道工序，这会带来温室气体和其他污染物。

There are many procedures involved in the manufacture of food that result in greenhouse gases and other pollutants.

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