basic density 中文意思是什麼
basic density
解釋
標準密度-
It revealed that hexagonal structure was easily synthesized in the neutral medium, and lamellar structure was inclined to prepare under basic condition, and from the cooperative charge density matching mechanism and function of manganese iron and template molecular, the alkalescence influence on the structure was explained, and appropriate neutral hexadecylamine ( hda ) availed to synthesis of mesophase with more ordered degree for the mediation of packing parameter
通過水熱合成方法對錳氧有序相的合成進行初步研究，探討合成工藝對有序結構的影響：在中性的條件下，易合成六方有序結構產物；在堿性條件下，更易合成層狀結構產物。並從電荷匹配的原則及錳離子與模板劑間鍵合作用解釋了堿量的多少對合成產物結構的影響。 -
The basic criteria of the matrices for eba are formulated as being a sufficiently high density and an appropriate size distribution
吸附劑基質是決定eba技術能否成功應用的關鍵性因素，它首先必須具有合適的密度和粒徑分佈。 -
According to basic principle and application experience of black light lamp, the trapping lamps were opened out using the principle of wave, color and taste to trap insect pests imago with the electric networks of frequently vibration and high voltages, it can trap many species and amounts of insect pests, reduce amounts of field ovum, greatly reduce insect pests density, save energy, have low lost, little harm to natural enemy and persons and livestock, have remarkable economic, ecological and social efficiency
摘要借鑒黑光燈的基本原理和應用經驗，再配以頻振高壓電網觸殺的頻振式殺蟲燈，誘集的害蟲種類多、數量大，既大幅度降低了田間落卵量，又顯著減少了蟲口密度；節能省電，成本低；葉昆蟲天敵殺傷力較小，對人畜安全，不污染環境，具有顯著的經濟、生態和社會效益。 -
In the course of the computation, the basic parameters of the atmosphere status of the examples, such as air density profile, temperature profile, relative humidity profile, were compared and further analyzed. the results were showed by means of data forms and curves, which reflect the basic status of the actual atmosphere clearly and detailedly
在計算過程中，對各樣點的大氣狀況的基本參數，如空氣密度廓線、溫度廓線、比濕廓線進行了比較和分析，並將計算結果以數據表格和曲線的形式列出，較為清楚、詳細的反映了實時大氣的基本狀況。 -
This paper introduces the basic technology of 3d fashioned knitting on flat knitting machine by modifying knitting density and stitch transfering and holding
摘要介紹了利用改變編織密度、移圈收放針和持圈收放針的方法，在普通橫機上編織三維成型織物的基本工藝。 -
Applying the basic theories of spatial data mining and geomorphology, taking the loess plateau of north shaanxi province, china as the research area, this dissertation explored the theories and systematic structures of geomorphologic data mining and acknowledge discovery from dems, ascertained the systematic structures of topographic factors and synthetic topographic acknowledge, as well as systemically summarized mining algorithms from dems. the author pa id more attention also to analyze the principle and algorithm of flow length, curvature, relief, the earth ' s surface incision and gully density. in this research, the elementary constitutes and mining algorithms of regional character acknowledge in the loess plateau were probed
本研究在廣泛總結前人研究成果與研究經驗的基礎上，利用空間數據挖掘和地形地貌學的基本理論，以陜北黃土高原多地貌類型區為實驗樣區，以1 10000比例尺dem為樣本數據，探討了dem中地形地貌數據挖掘與知識發現的理論方法和體系結構；確定了宏觀和微觀地形因子、地形綜合特徵知識的體系結構；系統總結了dem基本地形因子的提取演算法，並重點對坡長、曲率、地形的起伏度、切割深度和溝壑密度因子提取的原理與演算法作了深入的分析；提出了黃土高原地區區域特徵知識的基本構成及其系統完整、科學可行的挖掘提取演算法；擴充了arcviewgis軟體平臺中dem空間分析的基本功能；實現了以delphi7 . 0為平臺的地形信息輔助挖掘系統的設計與開發；完成了對黃土高原多地貌類型區（樣區）地形信息空間分異特徵的分析。 -
In this paper, research and manufacture work on high efficiency high power density high - voltage high - power dc power is undertaken on the basis of basic theories and past production. by inquisition the basic theory and project of sreies - parallel resonant converter witch is a soft - switch converter was selected to outspread research and design work
本文是在吸收前人研究成果的基礎上，理論聯系實際，針對高效、高功率密度、高壓大功率直流電源展開的研製工作。在經過大量的實際調研工作的基礎上，選擇了一種軟開關變換器（移相控制的串-並聯諧振變換器）的技術方案，並圍繞該方案展開理論研究和實際的設計工作。 -
Electron density is one of basic parameters of laser - produced plasma, so it has a important role in diagnosis of laser - produced plasma
電子密度是激光等離子體最重要的基本參數之一，因此在激光等離子體診斷中佔有重要位置。 -
The basic properties of wood such as moisture content, density, grain direction and modulus of elasticity can be measured nondestructively
摘要與木材材質有關之因數如含水率、比重、木理走向、彈性系數等可藉破壞或非破壞方法來測定或推定。 -
Effect of milk basic protein on rat bone mineral density
牛乳堿性蛋白對大鼠骨密度的影響 -
This theoretic model employs the basic idea of correlation measurement, achieve the density wave speed by the correlation of the signals of upper and lower sensors, and get the total flow rate and water cut through the theoretic relationship of density wave speed and total flow rate as well as holdup with the help of drift flux model so as to accomplish the oil / water two - phase flow measurement at last, using the limited available experiment data, the theoretic model has been simplified into an applicable linear alternative which is suitable to homogeneous oil / water two - phase flow measurement to accomplish the oil / water two - phase flow measurement using the density wave phenomena is of highly theoretically valuable for density wave theory research as well as oilavater two - phase flow measurement research. to develop new type oil / water two - phase flow instrumentation based on this theoretic measurement method will be very applicable and promising
在此基礎上，針對穩態密度波理論提出了基於密度波理論的油水兩相流測量理論模型，該模型以密度波傳播理論作為基礎，通過上下游傳感器信號相關獲得密度波傳播速度，利用密度波傳播速度與總流量以及持相率的理論關系結合漂移模型來求解總流量和含相率，實現油水兩相流的測量，在理論分析的基礎上，在實驗資料有限的條件下，對基於密度波理論的油水兩相流測量理論模型作了極限的簡化，提出了本文油水兩相流測量理論方法應用在測量均勻油水兩相流中的實用線性模型。 -
Theoretically, using the theory of mutual effect between laser and plasma, the rule of laser propagating in plasma, and the principle of differential interferometry, the basic model of differential interferometry for plasma density measurement was built
理論上，運用激光與等離子體的相互作用原理、激光在等離子體中的傳播規律、以及差分剪切干涉測量技術原理，建立了使用差分干涉技術測量稠密等離子體密度的基本模型。 -
A monte carlo algorithm was presented to model the relation between the scattering phenomenon, depolarization changes and sea water depth, it is discovered that the radius of scattering point and the degree of depolarization increase with increasing of the sea water depth. at last, a optical engineering software ( lighttools ) is introduced to simulate optical scattering in the deep sea water, and studys the corelation between scattering and relative refractive index, particle density and particle size in the sea water. the experiment results show that the intensity of scattering will increase evidently with the increasing of particle size, particle density and relative refractive index. the methods and results in the article provide the basic theory and experiment validation for improving performance of communication, detection and imaging under sea water
本文以球形粒子的mie散射理論、 stokes矢量法以及mueller矩陣來研究海水的散射特性和散射中的退偏振度變化;通過montecarlo方法模擬藍綠激光在海水傳輸過程中的散射現象以及散射中的退偏度變化與海水深度的關系，發現隨著海水深度的增加，散射后的光斑半徑、退偏振度將逐漸增大。最後通過光學工程軟體（ lighttools ）對海水中的散射進行模擬實驗，研究散射與海水中粒子密度、粒子大小和相對折射率的關系。實驗結果表明，隨著粒子半徑、粒子密度和相對折射率的增加，散射的強度將顯著增加。 -
In the terms of interpolation, the image reconstructed from nearest interpolation or linear interpolation has good edge but serious noise ; reconstruction from 4 * 4cubic interpolation or three b - spline or three - order lagrange interpolations has better local character. 2 x 2cubic interpolations which has both better edge and local character is the ideal interpolation, the following is the basic principle during reconstruction : ( 1 ) the more width of interpolation, the more number of summation and the more order of interpolation polynomial, the higher of density resolution ; ( 2 ) the more of interpolation polynomial and width of interpolation, the more of reconstruction time simultaneously, aimed at eliminating the effects of noise contained in projection data, in this paper, author analysis cause and effects of common artifacts. importantly, discusses convolution back - projection reconstruction algorithm with a shift axis of rotation has been derived for correcting images that acquired with a divergence axis of rotation using the fan beam geometry with an angle - equaled detector
在ct圖像重建時，選擇有限帶寬窗有較好的空間解析度，三角形窗有較好的密度解析度，選擇餘弦窗則使得空間解析度與密度解析度的折衷；從窗函數的頻譜角度來講，可以用於圖像重建的一個良好的卷積窗函數應該具備以下條件： （ ? ）小的3db帶寬b ，即最小的主瓣寬度； （ ? ）最小的旁瓣最大峰值a ； （ ? ）最大的旁瓣峰值衰減速度d ；就內插函數而言，臨近點內插與線性內插重建圖像噪聲大，但有較好的邊緣與細節； 4 4三次內插、三次b -樣條與四次拉格朗日多項式內插圖像平滑，局部特性較好。 -
In the last twenty years, extensive studies have been made on the structure, basic magnetic properties, interlayer coupling, interfacial structures and its relative effects in magnetic thin and ultrathin films due to their potential application in magnetic random access memory ( mram ) and ultrahigh - density data storage
隨著在磁性隨機存儲器和超高密度存儲技術中應用的不斷拓展，近二十年來，磁性薄膜和超薄膜的結構、基本磁性、層間耦合、界面狀況及其相關效應一直是人們研究的熟點和難點之一。 -
An analysis of population distribution took place on all of the 11 sites, and population size and density of 8 sites out of these 11 sites were estimated by direct counting method, in order to get basic information of the population ecology of cathaica cavimargo
進行種群分佈分析時評估了石灰巖、純灌木、石灰石灌木、石灰石草地、花崗石灌木、花崗巖、純草地和花崗石草地8個樣地種群大小和密度，以便獲得cathaicacavimargo種群生態基本數據。 -
This standard provides a technical solution for many applications within the information industry such as digital broadcast, high - density laser - digital storage media, and so on. the basic part of avs, avs1 - p2, targets standard definition and high definition format video compression, and aims to achieve similar coding efficiency as h. 264 avc but with lower computational complexity
Avs1 - p2視頻壓縮標準的制定開始於2002年6月，它主要面向標清和高清視頻的編碼，目標是要取得與h . 264 avc相似的編碼性能，而編碼復雜性要大大低於h . 264 avc 。 -
In this paper, we take high molecule physics and the damage theory of rheologic material with lacuna as the basic, make the experiment as a mostly measure, take the pmma as a research object, to study the pmma ' s nonlinear viscoelasticity of high polymer. the technique showing minute details in minute view measure is used by the author to observe the change of crazing damage density follow the change of stress, time and temperature in term of creep and flab
本文以高分子物理學、含缺陷流變性物體的材料破壞理論為基礎，以實驗為手段，以工程中常用的pmma為研究對象，對pmma銀紋破壞的非線性力學行為進行了研究。作者採用顯微技術，對pmma在蠕變或鬆弛條件下，不同應力水平和不同基溫下的pmma銀紋損傷進行了實驗研究。 -
The results showed that stem volume ( v ) and wood basic density ( bd ) were the most important traits in selection breeding for pulpwood of masson pine and, stand and individul selections shoud be based on the provenance selection
結果表明，馬尾松制漿造紙材的良種選育應以材積和木材基本密度作為主要指標，首先進行種源的選擇，在此基礎上進行林分和個體的選擇。 -
In the numerical calculation, the unknown function is approximated by the product of basic density function and polynomials
根據裂紋面上位移函數的分佈特性，通過將位移間斷函數表示為特徵函數和一組多項式乘積的形式，為其建立了數值方法。
分享友人