crystal density 中文意思是什麼
crystal density
解釋
晶體密度-
Gallium arsenide single crystal - determination of dislocation density
砷化鎵單晶位錯密度的測量方法 -
Piezoelectric sensors, commonly known as quartz crystal microbalance, are sensitive to multiple signals such as the surface mass and the viscosity, density, dielectric effect, conductivity of the liquid
壓電傳感技術則是一種比較成熟的傳感技術，可響應石英晶體表面的質量變化及溶液粘度、密度、介電常數、電導率等參數。 -
Product features : it not only features all excellent quality vitrified tiles, but also features unmatched microlite feeling, with perfect density, uniformity, super high luster and strength, jade - like texture and crystal feel ; the product is superior in acid and alkali resistance, corrosion resistance and weather resistance
產品特點：具備優質玻化石的所有優良品質，同時又具備玻化石無法比擬的微晶質感，通體緻密，平整規正，超高光澤度，超高強度，玉石般的質感，晶瑩剔透；產品耐酸堿度、抗腐蝕性能、耐候性更為優越。 -
This paper derived the transfer matrix of the bilayer structure composed of left - handed and right - handed materials, and computed the density of states ( dos ) along the axis of the finite one - dimensional photonic crystal, which was constructed out of n such bilayer structures periodically
摘要推導出了由左右手材料構成的雙層結構的轉移矩陣，計算了由n個該雙層結構周期性排列所形成的一維有限長度光子晶體沿其軸線方向的態密度。 -
The microgels of close monodispersity with different volume and cross - linking density can be prepared by using an inverse emulsion polymerization method. both artificial and natural materials, including zeolites, membranes, vesicles, liquid crystal, microemulsion, micelles, biopolymers, etc., have been used as template. the three - dimentional network structure and spherical morphology of polymeric microgels may guarantee the homogeneous of the structure of the composite, the size and the morphology of the various organic - inorganic composites with unusual structures
在反相乳液聚合條件下，通過控制反應條件可以得到體積不同、交聯度不同的近乎單分散的微凝膠，如同分子篩、單（多）分子膜、囊泡、液晶、微乳液、膠束、生物大分子等可作為微納米無機材料合成模板一樣，高分子微凝膠所特有的三維網路結構和球形形貌有可能對在其中進行的無機結晶或沉積反應施加限域和導向作用，從而控制所生成無機材料的形貌和大小，得到各種具有特異結構的無機-有機復合材料。 -
It was found that, the as grown crystal of mnxcd1 - xin2te4 is p type semiconductor, both the charge density and the resistivity increase with x value, while the carrier mobility decreases with x
晶體的電學性能，發現生長態的mncd晶體均為p型半導體。隨著組分x值的增大，載流於的濃度np減小，遷移率p 。 -
This kind of high silica wrought aluminum alloy is provided with low density and well heat - stability, especially with the metallurgical structur ? similar with bearing alloy ? which is composed of dispersion distribution common silicon crystal hard mass point and the alloyed basal body is very fit for the components manufacture ? can bear small capacity moving load and friction load
這種高硅變形鋁合金具有密度小和200以下良好的熱穩定性，特別是它的由彌散分佈的共晶硅硬質點及合金化的相基體組成的類似軸承合金的金相組織、特別適合用於製做承受小能量動載荷和摩擦載荷的零件。 -
The process parameters of preparing nanosized titanium dioxide powders were systematically studied by electrochemical synthesis experiments at room temperature. the rutile phase and anatase phase powders were obtained in the sizes of 9. 7nm and 9. 2nm respectively, and the complete crystal powders were formed after calcined at 400 for two hours. in the process of experiments it was observed that the low current density resulted in rutile phase powders, while the addition of little amount of ions of sulfate promoted the formation of anatase phase powders
在本實驗條件下，小的電流密度有利於金紅石相的生成，而少量硫酸根離子的引入對生成銳鈦礦相粉體有利，調整電流密度大小和引入硫酸根離子的量，可以得金紅石型和銳鈦礦型的混合混體；研究無定型粉體，銳鈦礦相粉體以及金紅石型粉體隨溫度的粒徑變化情況時發現，粉體在400以前晶粒長大相對緩慢， 400以後晶粒粗化現象嚴重。 -
Method of measurement of etch pit density of germanium crystal
鍺晶體浸蝕點密度的測定方法 -
With the development of the growth skill craft of gaas single crystal, the density of el2 can be controlled in 1 - 5 1016 / cm ~ 3 and its distribution becomes more uniform in gaas wafer too, so the distribution of carbon seems to be more important to determine the uniformity of electrical resistivity of si - gaas material. so it seems to be very important to study the distribution of carbon and the effect of dislocation on the distribution of carbon
隨著單晶生長技術的發展，通過退火，由於si - gaas中理論化學配比偏離， el2濃度可被控制在1 1 . 5 10 ~ （ 16 ） cm ~ （ - 3 ） ，且分佈均勻。因此碳的分佈就成為決定si - gaas材料電阻率均勻性的一個關鍵因素。所以，研究碳微區均勻性就顯得非常重要。 -
Furthermore, the growth and the study of self - organized quantum dots structures become more and more important recently, and the application of self - organization technique become wider and wider in this thesis, we address the theory of film growth and the growth technique firstly more, the ways and characteristics of surface detection are prescribed we mainly report the growth process, results and discuss of self - organized quantum dots structures in the a12o3 substrates by s - k mode using ecr - mocvd, in the espd - u device the growth art of ain epilayer which is the preliminary foundation of self - organized gan / ain quantum dots structures, including the substrate cleaning, nitridation, the growth of buffer and the growth of gan and ain epilayer, is discussed we deliberately compare the test result of rheed xrd and afm and achieved the optimalized condition of ain at last we have successfully realized the growth of ain which is much smooth and better crystal quality moreover, we grow the self - organized gan / ain quantum dots structure in s - k mode because the limits of the heater temperature, we can not grow the atom - smooth epilayer of ain until now so we could not grow better quantum dots which have small diameter and big density but the self - organized quantum dots structures with better quality will be realized successfully if the substrate temperature is increased the thesis study belong to my tutor subject of national nature science foundation ( 69976008 )
本論文主要論述了在espd - u裝置上，採用電子迴旋共振等離子體增強mocvd （ ecr - pamocvd ）方法，在藍寶石襯底上通過s - k模式自組裝生長gan aln量子點結構的生長工藝、結果及討論。而重點分析了自組裝生長量子點之前的aln外延層生長工藝，包括襯底清洗、氮化、緩沖層的生長和gan 、 aln外延層的生長；通過高能電子衍射、 x射線衍射和原子力顯微鏡測試，並且對這些測試結果進行了詳細的比較研究，得出了較優化的工藝條件，生長出了晶質較好、表面較平整的aln外延層；進而採用s - k模式自組裝生長了gan aln量子點結構。由於實驗裝置加熱爐溫度的限制，我們沒有能夠生長出原子級平滑的aln外延層表面，因而沒能夠生長出密度比較大和直徑比較小的量子點。 -
The assay system of the biological activity of lymphotoxin was established using l929 cell as the sensitive target, lt international standard as the positive control and crystal violet staining method to detect viable cell after treated with lt. the best relationship between dosage and effect could be got if the cell seeding density in cell plate was 1. 6 0. 1 104 the dosage of amd was lug / ml, and the starting concentration of dilution in the plate of lt standard was 10 iu / ml with two fold dilution. the credibility of the established system was detected with rhtnfp developed by r & d
為確定經上述步驟純化后得到的目的蛋自lt 27的生物活性，本研究以l929細胞為靶細胞、淋巴毒素國際標準品為參照，採用結晶紫染色法檢測經淋巴毒素處理后存活的細胞，對淋巴毒素生物活性測定的細胞接種濃度、淋巴毒素標準品板上稀釋的起始濃度和梯度稀釋的倍數、放線菌素d的使用劑量等進行條件實驗后，建立了人淋巴毒素生物活性測定方法。 -
The paper works out the ice crystal spectrum distributing in the different macroscopic and micro - backgroud of the cloud ( ie, the thickness, the temperature and the supersaturation with respect to ice of the nucleation layer ). this paper also works out the amount of catalyst which is allowed in the cloud nucleation layer according to the different quantity of the supercooled water, the density of the supersaturation of the vapor with respect to ice. simultaneously, the paper discusses the i nfluence of remaining time when seeding artificial ice nucleus in the different ascending - velocity and altitude, and elicits the proper seeding altitude of the catalyst
以此解為依據，得出了不同均流時，人工引入冰核在核化層存留時間，再以此時間作為人工冰核凝華增長時間，求出不同的雲宏微觀背景（如核化層厚度、溫度、冰面過飽和度等）下的冰晶譜分佈，經和實際資料比對符合相當好。進而求出核化層中不同過冷水量、冰面過飽和水汽密度下雲核化層可允許的催化用量。同時討論了不同升速，不同高度引入人工冰核時對其存留時間的影響。 -
Recent years, the using of piezoelectric sensors becomes a focus in novel biosensors research. the basic principle is that the characters of its oscillation are highly responded with the changes of the surface mass adsorption, or the physic characters in the reaction system including density, viscosity, conductivity and so on. a piezoelectric biosensor with a nanogram sensitivity could be constructed through a reasonable biological processing and structure designing to the piezoelectric quartz crystal
近年來，壓電傳感器檢測技術逐漸成為生物分析中的研究熱點，其基本原理是利用石英晶體振蕩特性對石英晶體表面質量負載（質量效應）和反應體系物理性狀如密度、粘度、電導率（非質量效應）等的改變具有高度敏感的特性，通過對石英晶體進行適當的生物學處理和結構設計，構建出具有具有ng級檢測能力的生物傳感器。 -
The influence of nano - al2o3 on the sintering and the properties of the si3n4 ceramics was researched in this paper. the samples with different amount of nano - al2o3 were obtained by using pressureless sintering at 1600, 1650, 1700 in the nitrogen atmosphere. the microstructure and the composition of the ceramics were determined by the means of x - ray, sem, micro - hardness meter etc. it is show that the sisty ceramics can be densified at 1650c to % percent of the theory density through the addition of nano - al2o3 ( the value could be 90 percent by other technique ). the crystalline growth of the cylindrical - si3n4 and the ratio of its longitude to its diameter are increased with the addition of nano - al2o3. a uniform microstructure and an fined crystal as well as more sialon phases can be obtained in the si3n4 ceramics through the addition of that
實驗結果表明：在碳管爐中、氮氣保護下進行燒結，添加劑為納米al _ 2o _ 3粉末時，由於納米粉末的高活性、高燒結驅動力，在1650就可使si _ 3n _ 4完全地燒結，並使其緻密度可達理論密度的96以上（比其它工藝高6左右） ；同時，納米al _ 2o _ 3地加入大大促進了長柱狀? si _ 3n _ 4的生長和發育及柱狀晶長徑比的提高，使微觀結構均勻、細化，形成了更多力學性能優異的固體? sialon相，減少了不利於陶瓷材料性能的晶間玻璃相，凈化了晶界。 -
The tourmaline is a kind of boron and silicate mineral, calling " the green imperial or royal seal " of the gems, there are its colors in many, the crystallization has nothing in common with each other, the crystal structure has tripartite crystal, six arrises body, post form body and one bunch of needles form fibrous respectively, the hardness of the tourmaline is generally about 7. 3 - 9. 6, the relative density is 3. 03 - 3. 25
式中r代表金屬陽離子，當r為mg2 fe2或li al3時，分別構成鎂電氣石黑電氣石和鋰電氣石三個端員礦物種。電氣石晶體呈近三角形的柱狀，兩端晶形不同，柱面具縱紋，常呈柱狀針狀放射狀和塊狀集合體。 -
Therefore, the noise such as crystal scattering due to long exposure time can be suppressed, and storage capability and fidelity can be improved. the high - density holographic storage system, including on - line and off - line heating units, has been designed and implemented for our experiments
研製了包括在線與離線小型精密溫控加熱裝置、晶體夾持器和角度? ?分維復用光學讀寫系統等主要部分的高密度全息存儲的熱固定系統，該系統操作靈活並具有實用性，其存儲能力不少於10000幅全息圖。 -
During this process, the level of doping concentration exceeds the density of cd vacancy in the crystal. in addition, the preparation of au contact on cd1 - xznxte wafers was studied. after further thermo - treatment, the stable ohm au contact was achieved
此外，對于在cd _ （ 1 - x ） zn _ xte晶體上制備穩定歐姆接觸電極進行了相應的研究，制定出相應的蒸鍍及退火工藝。 -
The analyses given in this paper to quasi - three - level for 946 nm laser are complete. the relation between 946 nm laser transmission and optimal crystal length has been derived from the rate equations describing the population inversion and the photon density in the laser cavity in the steady - state case. the minimal claims to coating have been given on the base of contrasting 946 nm transmission with 1064 nm transmission in the condition of different cavity losses and how the pump beam radius in the laser crystal and optimal crystal length affect the laser threshold and output power of 946 nm laser has been given as well
對產生946nm譜線的準三能級結構給出了較為完整的分析，利用激光諧振腔處于穩態時的速率方程，導出了準三能級nd ： yag946nm起振時，透射損耗與最佳激光晶體長度的關系，在與1064nm透射損耗相比較的基礎上，給出了不同的腔損耗情況下的最低鍍膜要求，並且給出了激光閾值、輸出功率和最佳激光晶體長度及泵光光斑大小的關系，這為設計室溫下高效運轉的946nm激光器的提供了理論基礎，這種分析方法對研究此類低增益，準三能級或三能級激光系統輸出特性有借鑒意義。 -
Density of states for one - dimensional photonic crystal composed of alternative left - handed and right - handed materials
左右手材料構成的一維光子晶體的態密度
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