集的密度 的英文怎麼說
中文拼音 [jídemìdù]
集的密度
英文
denseness of set-
The density of holes in the base is less than the density of free electrons in the emitter and collector.
基極中空穴的密度小於發射極和集電極中自由電子的密度。Previous researchers have always determined the sp atial distribution patterns ( sdp ) of castanopsis kawakamii with a sample - dis tance method. however, the distribution patterns may be affected by the quadrat si ze and, in the course of analysis, the density differences among the cluster plots are not considered ; therefore, differences of cluster plot size and the dispersi on degree among individuals of cluster plots can not be known. authers of this pa per have determined the spatial distribution patterns of castanopsis kawakamii population in different habitats by means of non - quadrat distance method and a nalysed the pattern intensity and grain of the sdp. the pattern intensity is defi ned with the relative density differences and the pattern grain can embody the d ispersion degree of the individuals in the plots, and the dispersion degree among the plots. the determined results are as follows. the intensities of the species range in order from strong to week : litsea mollifolia p. kawakamii i. purpure a r. cochinchinensis c. kawakamii c. carlessii d. oldphamii s. superba. the gra ins of the species queue in order from coarse to close : s. superba = litsea mollif olia r. cohinchinensis c. kawakamii = i. purpurea c. carlessii p. racemosam d. oldp hamii. these determined results tally basiclly with the results authers of this paper have got in determining the same plots by means of aggregate index access ing method. in view of this, it is held that the sdp of c. kawakamii is closely related to the habitats and biological features
前人都是採用樣方方法對格氏栲種群數量的空間格局進行測定，而格局分佈有可能受樣方大小的影響，且分析過程中沒有涉及聚塊間密度差的問題，因而無法掌握種群的聚塊大小差別及聚塊內個體間的離散程度.本研究採用無樣方距離法，測定不同生境的格氏栲種群空間格局，分析格氏栲種群格局的強度和紋理.強度以聚塊和間隙的密度差來定義，紋理則是體現聚塊內個體間的離散程度與諸聚塊間的分離程度.測定結果表明，格氏栲種群格局強度從高到低排列次序為：木姜子蚊母樹冬青茜草樹格氏栲米櫧虎皮楠木荷；格局紋理從粗到細的順序是：木荷=木姜子茜草樹格氏栲=冬青米櫧蚊母樹虎皮楠.這一測定結果與作者採用聚集度指標測定相同樣地格氏栲種群空間格局的結果基本相符.因此，格氏栲空間格局類型及分佈與格氏栲生物學特性及生境的關系密切Geoid is the reference datum of spatial data collection, so how to ascertain the geoid, that of all over the world, that of one nation, or that of one zone, is always an nuclear task of surveying science but there is not the quick and automatic solution. the density of the required data of astronomical measurement, gravimeter survey and geodesic survey is not satisfied
大地水準面是空間測量數據外業採集所依據的參考基準面。確定全球、一個國家、一個地區的大地水準面的形狀始終是測繪科學的一項核心內容，一直未能有快速、簡潔、自動的解決方法。需要的天文測量、重力測量、大地測量等數據的密度無法滿足其需要。Numerical simulation results indicate that, for low temperature dust particles, dust particles mainly exist in the area near the column center and their charge - number can be considered as a constant, while in the area where there are no dust particles, ion and electrons are in ambipolar diffusion ; for high temperature dust particles, both the distribution regions of dust particle and high ion density are expanded and dust charge - number is increasing with the distance from the center
計算結果表明：當塵埃粒子的溫度較低時，塵埃粒子主要集中在圓柱形放電器的中心很小的區域，塵埃粒子攜帶的電荷幾乎是一個常數，受塵埃粒子空間電荷的影響，離子在該區域的密度最高。在遠離中心區域，離子和電子呈現雙及擴散特點；當塵埃粒子的溫度較高時，塵埃粒子分佈的區域和高離子密度區域擴大，塵埃粒子離放電器中心越遠，攜帶的負電荷越多。Standard practice for making test cylinders and prisms for determining strength and density of preplaced - aggregate concrete in the laboratory
在實驗室內進行預置集料混凝土的密度和強度試驗用圓柱體和稜柱體製作試驗的標準規范The mangrove bushes of 0. 26 acres located along the coast of keya river, adjacent to the exit of the west coastal expressway is an aggregation of many organisms in high density
位於虎山裡西濱快速道路下，客雅溪沿岸旁，有一片面積0 . 26公頃的水筆仔純林，是許多生物聚集點，生物的密度非常高。Standard test methods for density of soil and soil - aggregate in place by nuclear methods shallow depth
核放射法現場測定土壤和土壤集料密度的標準試驗方法Methods of test for density and water absorption of coarse aggregates
粗集料的密度及吸水率試驗方法Soil quality. physical methods. measuring of the bulk density. sand method
土壤質量.物理方法.集塊密度的測定.沙土法Studying on simplification algorithms of " points cloud " data, putting forward three kinds of simplification algorithms of " points cloud " data according to the point number of data set after simplification and the density of data set and the uniformation of curvature change at control point by b spline curve interporlation
簡化「點雲」數據演算法的研究，提出了按指定數據集點的個數、按數據集點的密度閾值和按b樣條曲線插值型值點處曲率變化是否均勻簡化「點雲」數據的三種演算法。 3Methods of test for density and water absorption of fine aggregates
細集料的密度及吸水率的試驗方法Standard test method for density, relative density specific gravity, and absorption of fine aggregate
細集料的密度相對密度For thin - layered qingyun - stone ore, the dense and lower strength bedding faces influence greatly the effect of cutting blasting, so the cutting blasting technology for massive stone cant be used to cut this stone, and its blasting technique needs further experimental studies
摘要對于薄層狀青雲石礦，密集的、強度較低的層理面嚴重影響切割爆破效果，不能沿用塊狀石材的切割爆破方法，因此需要進一步試驗研究。2 lam c w h, li h f, jakakumar r. a study of two approaches for reconfiguring fault - tolerant systoric array
在產品處理階段，由於集成密度的增大，處理器被損壞的可能性也隨之增高。With the data recorded by computer, the author studies the experiment progress in detail, which includes the development of pore press, strain, strength of the sand, etc. connecting the development of these phenomena with the development of stress path, the author finds new mechanism which can explain the phenomena in the experiment. what is more, according to the dynamic test of the sand, there appears a steady state at the last phase of the development of strain and stress path, in which the strength of the sand is studied because it is an important parameter in evaluating the stability of sand against liquefaction. secondly, the dynamic constitutive relation was studied through the dynamic tri - axial test
本文首先採用目前國內較先進的微機控制動三軸儀，利用其可以適時採集和儲存數據的優勢，對砂土的實驗過程進行了細致的分析，研究該過程中孔隙水壓力發展、軸向應變發展以及它們與應力路徑之間的關系，對飽和砂土的剪脹、剪縮和卸載體縮等多個方面進行了研究，探索了砂土的動力特性，分析了影響砂土抗剪強度的各種因素，這些因素既包括土本身的特性（土的密度、結構、級配、透水性以及初始狀態等） ，又包括動荷載的特徵（振動力幅值大小和振動頻率等） 。Silica ( sio2 ) is a very promising material used to fabricate the optical waveguide for its low insertion loss, efficient fiber - to - chip coupling, high integration density and compatibility with microelectronic process. it is possible to realize the monolithic integration of optical devices with microelectronic devices and the passive devices with the active ones
而硅基氧化硅光波導以其低的插入損耗、能有效的與光纖耦合、集成密度高、可以充分利用現已成熟的微電子技術等特點成為較為理想的實現波導結構的材料。In the process of oil exploration and exploitation, a great deal of data can be collected. these data form 3d data sets, for instance, density sets, hole degree, and flow sets of high - pressure shoot in one block. at present, the usual adopting method is to draw isoclines of data sets, and ask the career men to analyze and explain them
在石油勘探、開發過程中，會採集到大量的數據，形成三維數據場，如某一區塊的密度場、孔隙度場、高壓射流的流場，目前使用這些數據時，通常採用的方法是畫出數據場的等值線，然後由專業人員進行分析、解釋。In petroleum exploration and development, inclined and fractural formations are often encountered. it is necessary to solve in situ how to detect inclined formation, fractures, and their density and orientation
如何利用聲波測井檢測傾斜地層、探測裂縫性儲集層以及裂縫的密度和走向等，都是實際工作中迫切需要解決的問題。In plant - dense habitats, phalanx species with higher ramet density may prevent establishment of other species by seedling and / or vegetative propagules. in a community, the occurrence of monodominant patches of clonal species may lead to a lower species diversity
在高植物密度生境中，高度密集的密集型克隆分株，阻止其它物種的定居，容易形成局部壟斷的格局，從而降低群落物種多樣性。A mare on the moon having rock of greater density than that of the surrounding area, thus exerting a slightly higher gravitational force
質量密集月球上的陰暗部，其內部巖石比周圍地區的巖石的密度大，因此產生略大些的引力分享友人