豐度分數 的英文怎麼說
中文拼音 [fēngdùfēnshǔ]
豐度分數
英文
fractional abundance-
Our study shows that maturity has an effect on the evolution of long chain alkyl benzenes, that is, with the increase of maturity, the carbon number distribution of alkyl benzenes shifts to the lower homologues isomers ; relative abundance of alkyl benzenes isomeride decreases, whereas n - alky benzenes increase
研究表明：長鏈烷基苯的演化受成熟度的影響，表現為隨著成熟度的增加，長鏈正構烷基苯的碳數分佈前移，長鏈烷基苯異構體相對豐度減小；而正構烷基苯相對豐度有增加的趨勢。On the bases of the galaxy evolution theory, we use the therotical chemical evolution model of three zone ( such as halo, thick disk and thin isk ) and multi - phase ( diffuse gas, molecular clouds, stars of both low and high mass, the remnants ). by comparing with the observational constraints, such assurface densities, age - metallicity relation, g - dwarf metallicity distribution in the solar neighbourhood and the correlation between [ a / fe ] and [ fe / h ], supernovae rates, infall rates. the rationality of the model is verified. based on the theory model, we calculate the abundance of neutron capture element
本文正是在銀河系化學演化的基礎上，利用銀河系的三成分（ threezone ） （即暈、厚盤和薄盤）多相（ multi - phase ） （氣體，分子云，大、小質量恆星以及剩餘物質）的化學演化的理論模型，通過與觀測約束（質量面密度、場星的年齡-金屬豐度關系、太陽附近g矮星金屬含量分佈函數、三成份的特徵量、元素的星系化學演化、超新星的爆炸率、內落速率等）的比較，來檢驗模型的合理性。The close canopy of fragmental evergreen broadleaved forest community is less than the one of continuous evergreen broadleaved forest, and the plant species of fragmental evergreen broadleaved forest community are also less than those of continuous evergreen broadleaved forest, and there are some conifers in the fragmental evergreen broadleaved forests
群落郁閉度不如連續森林大，植物種類也不如連續森林豐富，而且其中夾雜著一些針葉樹。常綠成分種類組成不如連續森林豐富，針葉成分數量上較連續森林的多。3. puts forward matrix function form of the decomposition - coordination step model for water resource ' s optimal distribution in this thesis. it makes the model more prolific
3 、初步提出了灌區水資源優化調度分解?協調遞階模型的矩陣函數形式，這使得模型的內容更加豐富化。Our results show that, during the evolution of a binary system, the system widens as it loses mass, and the orbital period increase, while orbital eccentricity remains nearly constant, which can explain the distribution regulation of orbital elements of normal g - k giant and barium stars and the distribution character of the heavy - element abundances of barium stars
計算結果表明，隨著星風吸積過程的進行，在星風質量損失階段系統軌道半長軸將增大，導致軌道周期增大，而偏心率變化不大，由此可以解釋普通紅巨星雙星系統和鋇星系統的軌道根數的分佈規律和變化情況以及鋇星重元素豐度分佈特徵。( 2000 ). the neutron irradiation is assumed to derive primarily by the reaction 13c ( a, n ) i60 with a minor contribution from the marginal burning of 22ne through the channel 22ne ( a n ) 23mg in the final, high temprature phase of each flash. and we considered the influence of the various parameters such as the initial core mass, the envelope mass, the mass - loss rate, the overlap factor and the delution factor etc., and we vary their value with the pulse number
本文採用分叉s -過程反應通道，以~ （ 13 ） c （ ， n ） ~ （ 16 ） o 、 ~ （ 22 ） ne （ ， n ） ~ （ 25 ） mg為雙脈沖中子源，用最新的中子俘獲截面，利用gallino和busso等人給出的agb星三殼層核合成模型，考慮到核心質量、挖掘程度、重疊因子、稀釋因子及星風質量損失率隨脈沖數的變化，詳細計算和研究了各個金屬豐度情況下的3m 。The result suggests that the species richness index ranks as following among 6 stations : yangma islet > drogan - whisker islet > moon bay > jingouzhai > jingouzhai gravel, and yangma islet possessed the highest species diversity index, while jingouzhai the lowest, the order of species diversity index among 6 stations is yangma islet > moon bay > drogan - whisker islet > jingouzhai > zhifu islet > jingouzhai gravel, the order of species evenness index is : moon bay > drogan - whisker islet > yangma islet > jingouzhai > zhifu islet > jingouzhai gravel
紅藻群落的物種豐富度依次為：養馬島芝罘島龍須島月亮灣金溝寨金溝寨礫石灘；物種多樣性指數以養馬島為最高，金溝寨礫石灘最低，依次為：養馬島月亮灣龍須島金溝寨芝罘島全溝寨礫石灘；物種分佈的均勻度指數依次為：月亮灣龍須島養馬島金溝寨芝罘島金溝寨礫石灘。With the new analytical techniques of platinum - group elements ( pge ) published after 1990 ' s and a huge amount of reliable analytical data of pge accumulated at present, it is found that the data of pge abundances in crust, crustal rocks and sediments published before l980 ' s are not suitable as an evaluating criterion
摘要隨著20世紀90年代鉑族元素分析測試技術的突破性進展以及大量可靠的巖石和沉積物鉑族元素含量分析數據的積累，引用20世紀80年代前發表的有關鉑族元素的地殼豐度和巖石、沉積物中的平均含量作為衡量標準已不適宜。In the space, wavelet approximation formula and sampling formula are gived and these are simple and easy for calculation. it is a new attempt to establish mra in the reproducing kernel space. this not only makes up existing researchful defects but also gives a better method to resolve numerical approximation problems and it further enriches the reproducing kernel theory and wavelet method. this provides more applied method for resolving numerical approximation problems in the space which is often used in the engineering
在再生核空間中建立的多尺度分析方法是利用再生核工具探討小波理論的又一次大膽的嘗試，它不但彌補了現有研究的缺憾，而且給出了解決數值逼近問題的一個新思路，進一步豐富了再生核理論，充實了小波方法，這為在工程中常用的空間中解決數值逼近問題又提供了一種較為實用的方法。According to the chemical experimental data of residual organic carbon content, kerogen carbon isotope, aliphaltic gas chromatography mass spectrometry of 67 outcrop specimens in the baise basin, the authors analyse the geochemical characteristics of the type and the maturation of organic matter in the lower triassic - devonian source rock
根據百色盆地周緣大量露頭樣品的殘余有機碳含量、乾酪根碳同位素、飽和烴色譜及色質等地球化學實驗數據，分析了下三疊統泥盆系海相烴源巖的有機質豐度、類型、熱演化程度。On attitudes toward prescribing opioids, both pain - knowledgeable physicians and other physicians scored a higher means, respectively of 3. 52 and 2. 91 as opposed to 2. 68 of 5th - yr medical students, the lowest of all
在開嗎啡類止痛藥處方的態度方面，所有的醫師（疼痛知識豐富的醫師3 . 52分，其他醫師2 . 91分）皆比五年級見習醫學生（ 2 . 68分）具顯著高的平均分數。Choosing hanzhong region as investigating region, the species of acridoidae as object, by the means of systematic research, location research, seasonal research and full - scale research, the student studied the biodiversity of acridoidae in hanzhong according to the results of analysis and clustering by use of software tools such as excel and spss on the biodiversity indexes including species richness index ( ds ), shannon - wiener index ( h " ), simpson index ( a. ) and pie index, and pielou index ( e )
本研究以漢中地區為研究范圍，以蝗總科acridoidae昆蟲對象，通過系統調查、定點調查、季節調查和全面普查等為研究手段，應用excel電子表格和spss等工具軟體對調查數據進行聚類和分析，選擇物種豐富度指數、 shannon ? wiener信息多樣性指數（ h 』 ） 、 simpson優勢度指數（ ） 、 pielou均勻度指數（ e ） 、種間相遇機率（ pie ）和物種多度等多樣性研究指標研究了漢中地區蝗總科生物多樣性。These source rocks are good gas source rocks and have a certain extent of oil - generating capability based on high abundance and type 2 - of organic matters
石炭系烴源巖有機質豐度較高，有機質類型以型和2型?主，絕大部分處于生油高峰至干氣期， ?良好的氣源巖，並具有一定數量的生油能力。On the basis of above experiments, the chemical kinetic model inwhich organic matter of source rock of deep - formation in the north of songliao basin primarily crack into oil or gas is established, which set up a basis for evaluating oil - generating amount, gas - generating amount of source rock of deep formation in different periods ; set up the chemical kinetic model inwhich different qualities of oil and family constituents in oil secondarily cracked into gas, which provide theoretical foundation and practical methods for dynamic evaluation of gas - generating amount and oil - consuming amount in process of oil cracking. the geochemical features of source rocks in deep - formation of basins are systematically evaluated
在上述實驗基礎上，建立了松遼盆地北部深層源巖有機質初次裂解成油、成氣的化學動力學模型，為評價深層源巖于不同時期的生油量、生氣量奠定了基礎；建立了不同性質原油及原油中各族組分二次裂解成氣的化學動力學模型，為動態評價油裂解過程的成氣量和耗油量提供了理論依據和實用方法；對盆地深層源巖的地化特徵進行了系統評價；考慮到深層源巖的成熟度較高，實測地化指標（殘余有機碳、氫指數等）不能客觀反映源巖有機質的原始豐度和原始生烴潛力。By using of the richness, diversity and evenness indices, combined with twinspan, dca, dcca, multi - factors regression, correlation analysis techniques and so on, species diversity and diversification mechanism were studied. the communities were classified into eight types by twinspan. the first axis of dca indicated basically the diversification of soil water, while the second axis indicated basically the disturbance degree by people. the correlations between n, organic matter, elevation and the first axis are negative association, and the others are positive
通過豐富度指數、物種多樣性指數和均勻度指數，結合twinspan 、 dca 、 dcca排序，多元回歸和相關分析，研究了物種多樣性及其變化機制，把植物群落分為8個群落類型；物種多樣性指數的dcca第一軸基本上反映了土壤水分的變化，第二軸基本上反映了人類對群落的干擾程度，物種多樣性指數隨土壤水分的增加而增大，隨人類的干擾程度的增加而減小。Based on the compound poly - power function cam profiler design method of optimum cam profile was investigated. cam time profile of the original tbd604b diesel was analyzed and the cam profile was designed again by use of the method mentioned in this paper. performance testing improved and higher power output tbd604b diesel was satisfactory
本文以復合高次方凸輪型線為基礎，探討了凸輪型線的優化設計方法，對tbd604b柴油機原機的配氣凸輪進行分析了解了tbd604b柴油機配氣凸輪的升程函數為高次方曲線，且經優化，在允許的最大正加速度條件下，豐滿系數已達最大值。Such mechanisms, which regulate water flux, are likely to be mediated, in part, by aquaponns. aquaponns are integral membrane proteins occurring in mammals, plants, and microorganisms, which serve as channels that permit the bidirectional passage of water through cellular membranes. the rate of transmembrane water flux may be controlled by changing the abundance or the activity of the aquaponns
大部分水通道蛋白具有高度的專一性，只允許水分子通過而不允許其它分子及離子通過，因而調控水通道蛋白在生物膜上的數量和相對豐度能夠影響甚至改變細胞對水分的吸收和外排，對于提高植物抗鹽及抗旱性可能發揮著重要作用。Qualitative and quantitative investigation ( visual encounter surveys ) of terrestrial mollusca were carried out in each sampling site of mangshan nature reserve and babaoshan of guangdong. all terrestrial mollusca in each sampling site were collected and identified. a list of the name of the species of terrestrial mollusca, margalef species richness index ( d _ ( ma ) ), shannon - wiener index ( h " ) and pielou evenness index ( jsw ) were used to analyze their biodiversity
對各個採集點的陸生貝類不但進行了定性調查，而且進行了定量調查（ ves法） ，對調查採集到的陸生貝類物種進行編目，並採用margalef豐富度指數（ d _ （ ma ） ） 、 shannon - wiener多樣性指數（ h 』 ） 、 pielou的均勻度指數（ jsw ）對陸生貝類多樣性進行了分析。Based on plant communities and plots investigation in jinfo mt. and experimental site in guilin, the author calculated the indices of every plot with its species richness index, simpson index, shannon - wiener index, pielou evenness index and alatalo evenness index. the author analyzed the character and variation of the biodiversity in different area and different layers about the plots in jinfo mt
1採用典型樣方法，在金佛山和桂林實驗場選取典型樣地並做野外調查，分別計算各樣地的物種豐富度指數、 simpson指數、 shannon - wiener指數、均勻度指數、 pielou均勻度指數、 alatalo均勻度指數，對金佛山不同地區樣地生物多樣性以及不同地區不同層次生物多樣性特徵和變化進行分析。Compared with the studies on macrofauna in bohai sea and southern yellow sea, the macrobenthic abundance and biomass in jiaozhou bay were less than those of two seas. but the macrobenthic secondary production in jiaozhou bay was more than that of the bohai sea. using the sieves with 0. 5mm aperture mesh in sorting quantitative macrobenthic samples shows more advantages than that of using sieves with 1mm aperture mesh
本研究同時使用了1mm和0 . 5mm孔徑的網篩進行大型底棲動物的分選，通過兩種孔徑網篩篩留大型底棲動物的種數、豐度和生物量比較，說明0 . 5mm孔徑的網篩對大型底棲動物分選在種類和數量組成優於1mm孔徑網篩，使群落結構更完整，樣品代表性更高。分享友人