density contrast 中文意思是什麼
density contrast
解釋
密度差-
Most galaxy associations are small and have a low density contrast.
大多數星系協是小的，密度反襯低。 -
2. the structure of purple soil is meliorated by sabaigrass. when contrast to bare land treatment and natural wild grassland treatment we knew that sabaigrass treatment and grass tree solid plating treatment reduced soil bulk density, enhanced soil capillary porosity, non - capillary porosity and porosity ratio, decreased soil sand grain content, enhanced soil clay grain and silt grain content so as to reduced the dispersal degree of soil, improved the aggregate capacity of soil, increased the amount of soil aggregate structure, meliorated the water permeability of soil, accelerated the form of good soil structure
龍須草能改善紫色土的土壤結構龍須草純種植被和林草立體種植植被能不同程度地降低土壤容重，減少土壤砂粒含量，增加土壤的毛管孔隙度、非毛管孔隙度和孔隙比，以及增加粉粒含量，從而降低土壤分散度，提高土壤團聚性，增加土壤團粒結構數量，改善土壤的透水性，促進良好土壤結構的形成，最終提高土壤的蓄水保肥性能，增強土壤的抗蝕性和抗沖性。 -
The feasibility and some advantages of employment of sil have been discussed. the numerical aperture are calculated when laser pulse is defocusing. in contrast with traditional microscopy objective, the employment of solid immersion lens can effectively increase the numerical aperture of the recording system ; thereby it can increase the volumetric density and decrease the demand of the incident laser power
當脈沖聚焦點相對于固體浸沒透鏡底面離焦時，對系統的有效數值孔徑進行了計算，結果表明採用固體浸沒透鏡離焦的方式進行記錄，系統的有效數值孔徑最低可增大到固體浸沒透鏡插入前的折射率倍，其數值孔徑的理論極限值為存儲介質的折射率。 -
The results showed that the density and coverage of shrubs growing in the intervale of sand fixing region were biggest, but those of herbs were smallest. in contrast, the density and coverage of shrubs growing in the lee slope of dune were smallest, but those of herbs were biggest
不同地形條件下，丘間低地灌木植物密度、蓋度最大，草本植物的密度和蓋度卻最小;背風坡灌木植物密度、蓋度最小，而草本植物的密度、蓋度卻最大。 -
Special features for copying inputting originals auto paper select, auto scaling select, vertical horizontal independent anemographic magnification, final scale adjustment, copy density adjustment 7 degrees, scan start position adjustment, and copy position adjustment, top bottom bottom margin setting, mirror image, trimming, negative positive inversion, header, reference input, rotate image, sharpness, contrast, additional copy, scanning speed change
自動用紙選擇，自動倍率選擇，縱向或橫向獨立縮放，倍率微調，復印濃度調整，掃描起始位置選擇，復印位置選擇，前後端空白選擇，消除框線，鏡像，正負片反轉，頁眉，參照列印，畫面偏轉，明兩度，對比度，追加復印，掃描速度選擇，電子分頁可選配置 -
Anthropogenic activities ( e. g. development, over - grazing, timber harvest ) can disrupt the structural integrity of oasis - desert landscapes and is expected to impede diversity communities across the landscape and make it fragmented. with human dimension and activities enhancing, the patchiness grain, edge density and landscape contrast become large, landscape diversity and patch fractal dimension decreased
隨著人類活動的增強，斑塊粒度、邊緣密度、分散度、對比度變大，而景觀多樣性下降，斑塊分維數變小，人類生產經營活動導致了綠洲-荒漠景觀破碎化，綠洲和荒漠生態系統界面上的突變性、對比度和異質性增強。 -
The arctic fox wool, the shanxi sheep camel ' s hair, the angolan rabbit hair, the hair of nyctereutes ussurienusis mstscie were researched on the density, the compression performance, the friction performance and the stretch mechanics performance through the contrast analysis
摘要通過對北極狐絨毛、山西羊駝毛、安哥拉兔毛、烏蘇里貉絨毛等的密度、捲曲性能、壓縮性能、摩擦性能和拉伸力學性能的測試，分析了它們之間的差異。 -
When the third pretreatment method was adopted, microwave input power was 700w, gas pressure was 1000pa and substrate was tangent on plasma ball surface, diamond films showed higher nucleation density by contrast
經過對比採用方案基片處理方式，基片和等離子球處于相切位置時，在微波輸入功率700w和反應氣壓1000pa時沉積工藝參數時，基片成核密度較高。 -
In contrast with conventional thermo - ionic cathode, field emitter array ( fea ) cathode has many special advantages, such as room - temperature operation without a cathode heater, high current density, low power dissipation, excellent on / off isolation characteristics and instant turn - on characteristics
與傳統的熱陰極相比，場發射陣列陰極具有許多獨特的優點，如無需加熱，可以在室溫下工作;電流密度比熱陰極高幾個數量級，並可工作在低電壓調制下;功耗低;極好的開關特性;可瞬時啟動等。 -
It is often impossible to differentiate between structure and density contrast in determining the source of a gravity anomaly.
在確定重力異常源時，不可能在構造與密度差之間作出抉擇。 -
In contrast, there were no significant changes in bone mineral density in the exercise group or healthy lifestyle groups
對比之下，運動組和健康生活方式組的骨礦物質密度無顯著變化。 -
By contrast, when ppar - gamma activity was stimulated with rosiglitazone, a commonly used anti - diabetes agent, the animals displayed decreased bone density
相反，羅格列酮（一種常用抗糖尿病藥物）刺激了ppar -的活性時，動物的骨密度顯示降低 -
When the network dataset is very large, conventional support vector machine learning algorithm is remarkably slow. by contrast the proposed algorithm based on space block and sample density is fast. it was applied in intrusion detection in this pap.
針對網路數據集過于龐大，學習速度過慢的問題，提出了一種基於空間塊和樣本密度的svm演算法，並將其應用到入侵檢測中。 -
In contrast to information entropy, the algorithm method of antibody density based on vector distance is simple and the speed of convergence is fast
摘要基於矢量矩的抗體濃度計算方法，其演算法較基於信息熵的簡單、收斂速度快。 -
The separation algorithm based on boundary tracing do not need the acute angle and / or the low density contrast at the points where the objects touched and get better separation result
基於邊界跟蹤的分離演算法能夠克服聚堆目標連接處的凹陷比較明顯並且或者在連接處存在灰度局部最小邊緣的要求，取得了較好的分離效果。 -
Correlation of dynamic contrast - enhanced mr imaging semi - quantitative parameters with microvessel density in breast disease
半定量參數與微血管密度的相關性
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