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塑料温室、立壕是以日光为热源。应选择背风向阳、水利条件好、有扩展前途的地块做建筑用地。方向以南偏西15度为宜,立壕间距以冬至时前排投影不影响后排光照为准。塑
Plastic greenhouse, vertical trench is the sun as a heat source. Should choose a leeward sunny, good water conditions, the expansion of the future plots of land for construction purposes. The direction of the south west 15 degrees is appropriate, vertical trench spacing to the front of the winter solstice projection does not affect the rear row of light shall prevail. Plastic