薄荷基 的英文怎麼說
中文拼音 [bóhéjī]
薄荷基
英文
menthyl-
On the basis of the theory of thin shells and the non - moment assumption, the equations of the motion of the conical shells under lateral cosinoidal loading are derived in the case of ignoring shearing stress
基於薄殼理論和無矩假定,在略去剪切應力的情況下推導了圓錐殼在側向餘弦載荷作用下的運動方程,並採用半解析差分方法進行了數值求解。Abstract : synthesis of sterically hindered dicyclohexylmethyl 、 l - menthyl and tert - butyl diazoacetate by diazo transfer was described on this paper
文摘:研究了用重氮轉移法合成具有較大空間位阻的重氮乙酸二環己基甲酯、 l -薄荷酯和叔丁酯。For the stress analysis of dryers under the line load of supporting rollers, according to hoff theoretical solution of thin cylindrical shell under line loads, mangelsdorf approximate solution is modified on the basis of the calculation analysis for 14 sets dryers " dimension by computer programming with matlab software. the approximate formulas of the second largest hoop stress of the middle section of the shell are derived
針對托輥線壓載荷作用下烘缸的受力分析,本文根據薄壁圓柱殼在線壓載荷作用下的hoff理論解,在運用matlab軟體對14組常用烘缸參數進行編程計算分析的基礎上,對mangelsdorf近似解作了修正,並由最小二乘法導出殼體中部截面環向應力次大值的近似計算式。The volatile oil of a. thaliana transferred with mint total dna was analyzed by means of gc - ms. two transgenic plants were measured to contain menthol component in 250 plants of tl generation and one plant in then * 267 progenies, which provided explicit evidence for ion beam - mediated polygenic character transmission between distant species. two conclusions were drawn : one was that multiple genes controlling the same trait could be transformed into the receipt and efficiently expressed, the other was that the transferred new character was hereditary, i. e., the genes controlling the new character could inherit
用gc - ms分析了離子束介導薄荷全dna轉化的擬南芥菜個體的揮發油成分,在250個轉化當代植株中有兩株被測出含有薄荷醇,在這兩株的267個t2代植株中仍有1株被測出含有薄荷醇,該實驗為離子束介導外源全dna轉化實現物種間多基因復雜性狀的轉移提供了明確的證據。Non - liner vibration of circular plate subjected to static load on elastic foundation
靜荷載作用下圓薄板在彈性地基上的振動問題The result show that ppv and c6o ( oh ) n in the ionic self - assembled multilayer films have nothing to do with each other on the ground state, but light arise charge transfer between ppv and c6o ( oh ) n on the excitation state, and the structure of electron donor - accepter is formed in the films
通過以上結構的確定及各種特性的測試分析,顯示靜電自組裝復合薄膜在基態下ppv和c _ ( 60 ) ( oh ) _ n不發生作用,但在光照激發狀態下會發生分子間電荷轉移,形成給體?受體結構。Mint total dna was transferred into a. thaliana mediated by ion beam with the influence of 0. 5 10 1. 5 1017 and 2. 5 1017 ions / cm2, respectively, which were on the bridge of saddle. among three transferred populations, their budding, seedling, growth and phenotypic variation took on obvious difference. combining these facts, the influence of 1. 5 1017ions / cm2 was decided as transformation influence of the following work
我們從另外一個角度出發,在離子注入劑量-擬南芥菜存活曲線的基礎上,選擇不同的離子劑量介導薄荷全dna轉化擬南芥菜,根據各個轉化群體在遺傳和生理上的不同變化,選擇1 . 5 10 ~ ( 17 ) ions cm ~ 2作為我們以後轉化工作的轉化劑量。In the formula, our experience in structural strength design and the experimental results are considered. and such factors are also considered as differences in materials of the skin and the reinforcer, effects of bending, torsion, stretching and offcenter of the reinforcer. furthermore, through post - buckling stress analysis of the skin, it is shown that even low stress level will result in buckling of the skin, but the skin still has loading capacity
在總結過去結構強度設計和試驗分析的基礎上,應用扁殼理論,在廣義力與廣義應變關系中考慮了蒙皮與加筋不同材料以及加筋的彎曲、扭轉、伸縮和偏心等的影響,推導出適合於工程應用的加筋殼結構軸壓屈曲臨界載荷的計算方法;並通過對薄壁結構蒙皮后屈曲應力分析,說明蒙皮在很低的應力水平時就出現失穩現象,但失穩后的蒙皮仍具有一定的承載能力。The aim of this dissertation is to shed some light on these subjects. first, systematic experimental study and theoretical analysis have been performed to study the damage of concrete due to loading history. in addition, an artificial neural network approach is developed to study the constitutive relations of materials, and some constitutive models of concrete under various loading history have been established
本文針對目前大壩設計和研究中混凝土材料損傷及本構特性這個薄弱環節,在深入分析國內外有關成果的基礎上,從理論和試驗兩個方面對混凝土材料經歷過荷載歷史后的損傷特性進行了深入的研究;同時,將人工神經網路技術應用到混凝土本構領域,建立了一系列在各種加載形式下的混凝土材料模型。According to test results of two specimens of local transfer rc joint from inclined column to beeline - shaped wall under vertical static loads and results of corresponding finite element analysis ( ansys ), fundamental behaviors of the joint are achieved, which include paths of vertical load transfer before and after cracking, stress distributions, occurrence and development of cracks and final failure mode of the joint
本文通過兩個鋼筋混凝土斜柱?一字形薄壁柱局部轉換節點在豎向荷載作用下的靜力試驗以及有限元分析,獲得了該節點的基本性能,其中包括開裂前後的豎向荷載的傳遞路徑、試件應力分佈,裂縫的發生、發展,及試件最後的破壞形態等。On the basis of the theory of thin shells and the non - moment assumption, the equations of motion of the cylindrical shells under longitudinal line - loading are derived in the case of ignoring the shearing stress, and then, the set of partial differential equations are solved by the fourier series method
基於薄殼理論和無矩假定,在略去剪切應力的情況下推導了圓柱殼在縱向線載荷作用下的運動方程,並採用fourier級數法進行了求解。Build the regional high - quality safe agricultural product supply center, production base of high - quality wheat, high - quality beef, meat sheep, sanyuan hybridization pig base, high - quality rice and potato production base, high - quality oil, peppermint and traditional chinese medicinal materials production base, environment - friendly vegetables, and fast - grown forest base
主要建設優質小麥生產基地、優質牛肉、肉羊、三元雜交豬基地、優質水稻米和薯類生產基地、優質油料、薄荷、中藥材生產基地、無公害蔬菜、速生豐產林基地。In this paper, plasma - enhanced chemical vapor deposition ( pecvd ) technique was used to deposit the dielectric p - sio2 films and p - sion films on the silicon wafer under the conditions of low temperature and low pressure with teos organic sourse. this research was focused on the evaluation of film growth, hardness, stress, resistance and refractive index, by changing the experimental parameters including rf power, substrate temperature, chamber pressure, and the flow rates of teos, o2, n2. the results showed that the p - sio2 film was smooth, dense, and structurally amorphous
實驗結果顯示,用pecvd法淀積的p - sio _ 2膜是一表面平坦且緻密的非晶質結構的薄膜,與矽片襯底之間有良好的附著性;在中心條件時生長速率可控制在2600a / min左右;在基板溫度410時有最大的硬度可達16gpa ;其應力為壓縮應力,可達- 75mpa ;薄膜的臨界荷重為46 . 5un 。In the scope of linear elastic theory, the consistent of the fundamental assumption between the theory of thin - walled beams and solid beams is analyzed and defined from the viewpoint of the thin plate theory. the drawback of volassov thin - walled beams theory is studied on the ground of the traverse distribution of loads on the thin plate. and, the fundamental assumption of generalized beam theory ( gbt ) is surveyed
本文在線彈性的范圍內從薄板彎曲理論出發,討論了薄壁桿件理論與實體梁理論在基本假定上的一致性,並從薄板荷載橫向分佈形式的角度分析了符拉索夫薄壁構件理論的局限性,對考慮截面畸變的梁理論? ?廣義梁理論( gbt )的基本假定進行了探討。Therefore, in the process of load transfer within the unconsolidated confined aquifer, the key strata of overburden rock are prone to have a compound breakage when the load on the upper interface of bedrock is great and the bedrock is very thin
在鬆散承壓含水層的載荷傳遞作用下,作用在基巖頂界面的載荷較大,當基巖厚度較薄時,采場覆巖關鍵層易產生復合破斷。On the basis of the traditional elasticity theory, nonlinear theory, ultimate theory and theory of reinforced concrete slabs with simple - supported condition, this paper analyzes the whole process of reinforced concrete thin slabs in the loading test of distributing static load, on the objects of reinforced concrete thin slabs with complex geometry, complex boundary condition and distributing of reinforce bars. and then analyzes the load capacity under the effecting of static load
本文在傳統的鋼筋混凝土彈性理論、非線性理論和極限理論以及在簡單支承條件下的鋼筋混凝土板理論的基礎上,以復雜幾何形狀、邊界條件及配筋形式的鋼筋混凝土薄板為研究對象,對其在靜力分配梁加載下的加荷試驗的全過程進行分析,並對其在靜荷作用下的受力性能進行分析。Then the equations of elastic problem are imported into the hamilton system in the plane right - angle coordinate system and a new symplectic numerical method, the symplectic difference method of elasticity in hamilton system, is put up based on the mixed equation of elastic problem. the arithmetic of the method is programmed and used in the solution of three problems of elasticity, which is sheet problem, simply girder problem and deep girder p roblem that is pressed equally in the right - angle coordinate system
然後在平面直角坐標系下將彈性力學問題引入到hamilton體系中來,針對彈性力學混合方程建立了一種新的辛型數值計算方法? ?基於hamilton體系的彈性力學辛差分方法;並且編程實現了該方法的演算法結構,計算了三個具體的算例:受均布載荷的薄板問題、簡直梁問題和深梁問題。On this basis, draw magnetoelastic movement stability equation of thin current - carrying plates under the effect of electric magnetic field and machinery load
並在此基礎上,得出了載流薄板在電磁場與機械荷載共同作用下的磁彈性動力穩定性方程。Nowadays, the pcc pile have been widely used for soft ground improvement and application of foundation engineering. the behavior of pcc pile, that subjected to lateral load has been studied in this paper. the behavior of the pcc pile has involved moment and horizontal displacement and load of pcc pile. they are studied by in the physical model experimen, field test finite element numerical analysis, and exponential progression solution. in additional, the comparatively computal analysis are carried out among pcc pile, cast - in - situ concrete circular pile, prefabricate concrete square pile, and obtain some signification conclusion
本文主要圍繞現澆混凝土薄壁管樁(以下簡稱pcc樁)這一新型的樁基結構型式的水平承載性狀展開研究,通過室內模型試驗、現場試驗、有限元數值模擬分析試驗及彈性冪級數解析法分析等手段,對pcc樁水平承載的樁身受力性狀,樁身撓曲位移,樁身彎距分佈,樁與樁周土相互作用的地基反力等幾方面進行了初步的探討和研究,最後將pcc樁與目前工程中的兩種常用於承受水平荷載的樁型進行對比計算分析,得到有意義的結論。The effect of load on the crack is discussed using numerical simulation approach. then, the data mining approach to the unfavorable load combination of the crack is proposed using artificial neural network. the rule of the unfavorable load combination of the crack is generated and three dimensional load combination is given
( 2 )概要闡述了溫度場的模擬,研究了薄層單元和分佈裂縫模型,應用數值模擬分析方法,結合工程實際,分析了荷載對裂縫的作用效應;在對人工神經網路方法與數據挖掘關系深入研究的基礎上,提出了基於神經網路的裂縫不利荷載組合挖掘方法,提取裂縫的不利荷載組合,並研製了三維荷載組合曲面圖。分享友人