純微分式 的英文怎麼說
中文拼音 [chúnwéifēnshì]
純微分式
英文
pure differential form-
The study investigated aboveground growths of caragana korshinskii and artemisia ordosica planted in four modes, revealing that in different planting modes their densities, heights and canopy width and biomasses remained unchanged or tended to decrease slightly ; the young shoots of a. ordosica annually grew in a s - shaped cure and the young shoots of c. korshinskii grew fast in spring and grew slowly or cease to grow from july on ; the biomasses and leaf area indexes of c. korshinskii and a. ordosica annually varied in a double peak curve and there were 8 annual plants that invaded in the four planting modes and formed higher coverage ; the quadrat with only a. ordoska appeared to have obviously lower coverage and biomass that the other three quadrats
摘要對騰格里沙漠東南緣2種人工植被檸條和油篙在4種配置方式下地上部分的生長動態進行了研究，結果表明：不同配置方式下它們的密度、高度、冠幅和生物量基本不變或略微呈下降趨勢；油篙新梢的年生長動態呈s型曲線，檸條新梢春季生長速度較快， 7月份以後生長速度緩慢或基本停止生長；檸條、油篙地上生物量和葉面積指數的年變化均表現為雙峰型， 4種配置方式下共有8種1年生植物人侵，並具有較高的植被蓋度；同其它3個樣地相比，純油篙樣地1年生植物的密度、蓋度和生物量明顯偏低。Normality of holomorphic functions with differential polynomial
涉及微分多項式的全純函數的正規性The problem of uniqueness of meromorphic functions concerning the multipliable value is discussed. some uniqueness theorems are obtained, generalizes and improves the work of yang c. c and the work of fang m. l. the problem of uniqueness of meromorphic functions that sharing one pair of value im with their differential polynomials is studied and pefects present conclusion
主要研究了亞純函數分擔一個或者兩個公共值集的情形，對f . gross問題做了進一步討論，得到的幾個定理推廣改進了儀洪勛、方明亮等的結果；在涉及重值的情況下，討論了im分擔一個值的亞純函數的唯一性問題，所得結果改進楊重駿、方明亮等的工作；同時本文對涉及微分多項式的亞純函數im分擔一對值的唯一性問題也做研究，完善了現有的一些結論。Those conclusions may be meaningful for us to determine mixture ratio when fabricating composite films with special structures. 2. we study the phase - separation and microstructure of the pure binary and trinary mixed lb and ls films of dimyristoyl phosphatidyicholine ( dmpc ) cholesterol ( chol ) and sphingomylin ( sph ) deposited from pure water subphase by - a isotherms and tapping mode atomic force microscopy
2 、利用- a等溫曲線和原子力顯微鏡的輕敲模式對從純水亞相上提拉的不同生物分子二肉豆蔻酰磷脂酰膽堿（ dmpc ） 、膽固醇（ chol . ）和神經鞘磷脂（ sph ）不同種純的、二元及三元混合單分子膜- lb膜和ls膜體系的相分離和微結構進行了研究。In 1951, h. hopf proved, by associating a holomorphic 2 - differential to each constant mean curvature surfaces in r3, that only compact genus zero surfaces immersed in r3 with constant mean curvature are the round sphere, in chapter two, we consider the same question about the compact 2 - type surfaces of genus zero in s7
1951年， h . hopf發現r ~ 3中每個常平均曲率曲面都伴隨一個全純微分2 -形式，並證明了零虧格的常平均曲率閉曲面一定是r3中的球面.本文的第二章對于獷中零虧格的2型曲面討論了類似的問題The degrees of crystallinity of pure ptfe under the different conditions of water cooling, air cooling and furnace - varying cooling were made comparison by xrd. the thermal stability of pure ptfe and solid lubricant was analyzed by dsc - tg ; the composition and valence state of elements in the surface of carbon fiber, solid lubricant before and after friction test and lubricant transfer film were characterized by xps ; the frictional property of solid lubricant was tested by pin and disk test rig. the frictional wear property of solid lubricant between embedded bearing sleeve and steel axle friction pair ring was tested by special simulate test machine, the hardness of solid lubricant was tested by pm ; the compression strength of solid lubricant was tested by material test machine
用sem表徵原料微觀結構、摩擦表面及潤滑轉移膜表面形貌：用xrd進行原料物相分析，及比較水冷卻、空氣冷卻、隨爐冷卻三種工藝條件下的純聚四氟乙烯樹脂的結晶度；用dsc - tg分析純聚四氟乙烯樹脂及固體潤滑劑的熱穩定性；用xps表徵碳纖維表面、固體潤滑劑摩擦前後表面、潤滑轉移膜表面的元素組成、價態變化；用銷盤式摩擦磨損試驗機對固體潤滑劑進行摩擦性能測試；採用專用的臺架模擬試驗機對固體潤滑劑鑲嵌軸承套與鋼軸摩擦副間的摩擦磨損性能進行測定；用萊次偏光顯微鏡（ pm ）測試固體潤滑劑的硬度；用材料試驗機測試固體潤滑劑的抗壓強度等。During the process, the follwing task must be done : ( 1 ) desulphur ( 2 ) temperature control ( 3 ) the fine adjust of chemic analysis ( 4 ) making the steel more clear ( 5 ) slag making in order to implement the following main function, the lf process computer system should be designed : ( 1 ) to dynamic plan lf process according to recived heat schedule
Lf爐（ ladlefurnace ）即鋼包精煉爐，是鋼鐵生產中主要的爐外精煉設備。它的主要任務是：脫硫溫度調節精確的成分微調改善鋼水純凈度造渣在lf爐生產中建立過程式控制制計算機系統，主要用來解決以下問題：實時接收生產計劃，按照計劃動態組織生產。In the second part, when a four - dimensional smooth system has two distinct pairs of purely imaginvalues at the equilibrium y = 0, the 5 - order normal form is given
第二部分，通過復變量替換和比較系數，在平衡點y = 0處，當特徵根為兩對純虛根時，本文給出了一般的四維非線性微分方程的直到五次的規范形具體形式。With the aid of simplex optimum method and runge - kutta digital solution of differential equation system, the experimental data was fitted. the kinetic equations of the crystallization reactions have been given and the mechanism has been proposed on the basis of existing forms of boroxygen anion in the solution
運用runge - kutta微分方程組配合單純形優化法擬合出了轉化結晶動力學方程，在確定溶液中硼氧配陰離子存在形式的基礎上提出了相轉化反應機理。Normal families of meromorphic functions and exceptional function of differential polynomials
亞純函數的正規族和微分多項式的例外函數As for the issues of non - traded assets, applying the approach of stochastic dynamic programming, and under the principle of no - arbitrage, we obtain optimal strategy to hedge the real option in discrete and continuous conditions. and to the problems of special distribution of underlying assets, this paper analyzes the price movement of the underlying assets from the arrival of information, the market efficiency and the market mechanism which decide the price
對實物資產的特殊價值分佈問題，本文從決定資產價格的市場機制、信息到達方式及市場效率三方面來分析實物資產的價格變動特徵；並重點研究當基本資產遵循純跳躍poisson過程、跳躍擴散merton過程及均值回復過程時的實物期權定價問題，運用復制定價和隨機動態規劃方法，得到確定實物期權價值和風險對沖策略的偏微分方程。The value distribution for differential polynomials fkq f in meromorphic function f
亞純函數微分多項式的值分佈On the behaviour of meromorphic solutions of some higher - order algebraic differential equations
關於一類代數微分方程的亞純解的行為方式分享友人