次臨界轉數 的英文怎麼說
中文拼音 [cìlīnjièzhuǎnshǔ]
次臨界轉數
英文
minor critical speed-
Under action of uniformly or polynomial distributed load, upper and lower critical loads of revolving shells ( including conical shells, spherical shells and quartic polynomial shells ) with uniform thickness, linearly, exponentially or polynomial variable thickness were evaluated
給出了均布或多項式分佈荷載作用下，等厚度、線性、指數型或多項式型變厚度的圓錐殼、球殼或四次多項式型旋轉殼的上、下臨界荷載。There are some differences between air conditioning rooms and natural ventilation ones ; the same situation exists with their thermal comfort requirements. the paper, aiming for thermal environment characters of residential buildings in cold zone, in the first times by means of fuzzy evaluation, puts forward a fuzzy evaluating model of the thermal feelings in a natural ventilation room of residential houses, which is mainly based on studies of the subjective feelings from people living in such curtain houses and measures of objective data from investigation with questionnaires
本文針對寒冷地區居住建築熱環境特徵，以實際居住建築中的人體主觀感覺為研究對象，伴隨客觀參數測量的問卷調查手段，首次以模糊評價方法給出居住建築自然通風房間熱感覺的模糊評判模型，在此基礎上給出熱環境綜合評價指標；針對居住建築空調開啟特性，根據住宅自然通風與空調臨界轉換條件，提出能耗修正系數以便對此類建築的能耗進行正確科學的評價。Problem c and problem d are also dual. they have a dual property that there are at least three " critical points " corresponding to an optimal straight - line in problem c and there are at least three " critical straight - lines " corre - sponding to an optimal point in problem d. from these properties, these four non - linear prob - lems could be transformed into combinatorial problems and could be solved by algorithms with polynomial - time iterations
問題c和問題d也是對偶問題。問題c和問題d也有很好的對偶性質：在問題c中，對應於一條最優直線，至少存在三個「臨界點」 ；在問題d中，對應於一個最優點，至少存在三條「臨界直線」 。基於這種性質，這四個非線性優化問題便轉化為組合問題，從而得到迭代次數為多項式的演算法。
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