致冷因數 的英文怎麼說
中文拼音 [zhìlěngyīnshǔ]
致冷因數
英文
refrigerating factor-
Other reasons given for the worsening situation are the lack of community in the country, with people feeling less connected to their local neighbourhoods, the rising cost of bringing up children, and the increase in single - parent families
報告也提出了其他導致兒童生存條件惡化的原因，包括民眾普遍缺乏社區意識，人們與鄰居關系日益冷淡，養兒育女的花費增加，以及單親家庭數量上升。They also say that temperature increase is actually a good thing as in the past sudden cool periods have killed twice as many people as warm spells
他們還表示，溫度升高實際上是一件好事，因為曾經的驟冷時期導致人類死亡的數量是變暖的兩倍。They so say that temperature increase is actually a good thing as in the past sudden cool periods have killed twice as many people as warm spells
他們稱，溫度升高事實上是一件好事，因為在過去氣候驟冷所導致的人類死亡數是全球變暖時的兩倍。Aim : to analyze the mechanism, thermadynamic theoretical basis, dynamic mechanism and influencing factors of thermally induced phase separation ( tips ) in order to completely grasp the factors affecting the size, distribution and form of pores, so that the adjusted range of pore can be widened and the preparation of porous membrane can be repeated and controlled. methods : considering from the structural characteristics of tissue engineered materials, the methods of preparing porous membrane using tips technique, the hermadynamic theoretical basis, dynamic mechanism and influencing factors were analyzed, the problems and investigative directions in the future were also analyzed. tips technique is a process of phase separation of polymer homogenous solution under quenching, and it is suitable for diameter and structural form of the micropore materials prepared using tips are closely correlated with the kind and dispensing proportion of polymer attrnuant, polymer concentration and polymer molecular mass, etc. conducted, including determination of polymer - solvent system phase diagram, study of form and appearance of porous membrane of different thickness, study of form and appearance of porous membrane prepared with systems of different x, which is the parameter of polymer - solvent interaction
目的:分析熱致相分離成膜過程的機理、熱力學理論基礎、動力學機制以及影響因素，以便充分掌握影響孔度大小、分佈、形態的因素，使孔度調控范圍得以拓寬，使多孔膜的制備能重復可控.方法:從組織工程材料結構特點出發，分析熱致相分離聚合物多孔膜的制備方法及該法成膜的熱力學理論基礎、動力學機制以及影響因素.並分析實驗中存在的問題及今後的研究方向.結果:以熱致相分離法可制備聚合物多孔膜.熱致相分離法制備多孔膜是高聚物均相溶液在淬冷條件下發生相分離的過程，它適用於上臨界共溶溫度型聚合物一稀釋劑二元體系.熱致相分離法成膜的過程，可以認為是旋節線機理佔主導地位.熱致相分離法制備的微孔材料，其孔隙率、孔徑大小、結構形態與聚合物稀釋劑的種類、組成配比、聚合物濃度、聚合物分子量等因素密切相關.結論:可採用熱致相分離技術制備多孔膜，通過改變不同的成膜條件可獲得一系列不同孔徑尺寸和孔徑分佈的多孔膜材料.對熱致相分離成膜過程中聚合物-溶劑體系的相圖測定，不同厚度的多孔膜形貌研究，不同x （聚合物-溶劑相互作用參數）體系所制備的多孔膜形貌等需深人研究Since frosting is inevitable so long as some physical factors are satisfied, it will enlarge the resistance of airflow, cut down the airflow rate of air cooler and reduce the coefficient of heat transfer. in order to keep the refrigeration system run smoothly, frost must be removed
結霜只要滿足一定的物理條件就是不可避免的，霜層增厚增加了空氣的流動阻力，冷風機盤管流量減少，同時霜層增厚也會導致傳熱系數下降，因此為保持系統高效運行，除霜是必須的。The vertical diffusivity coefficients kv in january, april, july, october, 1997 are studied respectively. the result is same as the fact that the vertical diffusivity coefficient is large near the coastline and the vertical diffusivity coefficient is small in the interior. the vertical diffusivity coefficient assimilated in january is larger and the possible reason is that the vertical mixing of the south china sea is stronger in winter and there is a cool eddy in winter in the south china sea
我們分別做了1997年1 、 4 、 7 、 10月份的k _ v ，結果與垂直混合系數在岸邊附近較大，在海洋內部較小這一事實相一致， 1月份同化的垂直混合系數值偏大分析原因是冬季南中國海垂直混合較強，可能也與在南中國海內部冬季有一個冷渦有關系。Meanwhile, we proved that the major factor that determines the distribution of plants in china is the primary productivity. the cold index ( the lowest temperature ) plays a more important role than the highest temperature and the annual mean temperature in restricting the diversity of plants
Dcca和cca排序也顯示了和dca一致的結果，同時證明，決定中國陸地植物多樣性分佈格局的環境因素主要是初級生產力，而寒冷指數（即低溫）對多樣性的限製作用要大於高溫和年均溫的作用。分享友人