Taking the double-U type ground heat exchanger (GHE) as example, performs in-situ thermal response tests in three different seasons, and the results show that there does exist the seasonal effect.
实验结果表明，在地埋管换热器地下热响应实验中存在着季节效应。
2
With the unemployment rate at 8.1% and approaching double digits, the U. S. finds its longstanding quandary over immigration growing even more difficult.
Even if food producers and retailers accept substantially lower profit margins in 2011, we are still guaranteed to see double-digit across the board U. S. food inflation in the first half of the year.