例句 /

Abstract: By means of the basic climatic principle and the local astronomical parameters the optimal dip angle,maximum wind pressure borne by the roof material,the depth of the cold-proof ditch and the suitable distance between the greenhouses in Chengdu

Abstract: By means of the basic climatic principle and the local astronomical parameters the optimal dip angle,maximum wind pressure borne by the roof material,the depth of the cold-proof ditch and the suitable distance between the greenhouses in Chengdu

文摘:应用气侯学基本原理,当地天文参数与气候资料,计算了成都地区节能日光温室采光面最佳倾斜角,顶面覆盖材料承受最大风压,防寒沟深度及温室间适宜距离。