composition of sample 中文意思是什麼

composition of sample 解釋
樣本的構成
  • composition : n 1 作文（法），作詩（法），作曲（法）；作品，文章；樂曲；文體，措辭。2 編制；結構，構造，組成，...
  • of : OF ＝Old French 古法語。
  • sample : n 1 樣品，貨樣。2 標本；榜樣，實例。3 【統計】典型取樣，抽檢查。4 【電訊】信號瞬時值。5 【冶金】 ...
  1. Sample ' s analyses and tests in laboratory, this thesis makes a detailed research on holocene deposits characteristics of mu us desert, especially on characteristics of grain size composition, which break through previous description of determining the nature and gain a series of number indexes. at the same time, this thesis has also researched arenaceous source on every part of mu us. firstly mu us desert ' s forming process is deeply influenced by the east asian monsoon, the grain size gradually becomes smaller, while the magnetic susceptibility becomes larger from northwest to southeast this phenomenon not only appears on the surface of mu us, but also obviously reflects on the same layer of different places

    根據大量野外詳細考察和室內樣品分析與測試，本文對毛烏素沙地全新世地層沉積特徵做了細致的探討，尤其對區域地層的粒度組成特徵做了進一步的研究，突破了以往的定性描述，得出了一系列量化指標；結合野外的考察工作，對其不同地區的沙質來源做了詳細分析，主要得出以下結論： 1 、毛烏素沙地形成過程深受東亞季風影響，粒度自西北向東南逐漸變細、磁化率值逐漸變大。
  2. The composition of sample was identified by means of x - ray diffractometer ( xrd ). magnetic properties were measured by vibrating sample magnetometer ( vsm ). the combustion behavior and crystallization process of the gel were studied by means of differential thermal analysis - thermogravimetric analysis ( dta - tg )

    利用x射線衍射儀（ xrd ）確定樣品物相，振動樣品磁強計（ vsm ）進行磁性測量，綜合熱分析儀研究凝膠的燃燒和析晶過程，掃描電子顯微鏡（ sem ）和透射電子顯微鏡（ tem ）觀察粉末的形貌與粒度。
  3. In this experiment, a neodymium glass laser is used to study the effects of the operating voltage, power density, the height from the observed location of the plasma to the surface of the sample, the location of the sample, the gas composition and the pressure on the intensity and quality of the spectrum

    本文採用高能量釹玻璃激光器，研究了激光器工作電壓、功率密度、等離子體的觀測高度、樣品位置、環境氣體及氣壓對等離子體的譜線強度及譜線質量的影響，獲得了最佳的實驗條件，並測量了金屬分析樣品中某些元素的含量。
  4. When we want to know the composition of one sample, we can analyze it by ms

    當我們需要知道樣品的組成時，我們便可以用質譜測量其分子量。
  5. Based on the radioactive survey and results of sample analysis in certain radioactive - polluted area, anhui province, the spatial distribution of radioactive pollution source, the composition of radioactive nuclides are summarized, and the formation condition of radioactive pollution source in the investigated area are analysed

    摘要本文根據安徽某地放射性污染調查區的放射性測量和取樣分析結果，總結了該地區放射性污染源的空間分佈、放射性核素組成等特徵，分析了該區放射性污染源的形成條件。
  6. Study design. study of regional ariations in composition in a sample of 9 mildly to moderately degenerated human interertebral discs

    實驗設計： 9例輕度和中度退變的人類椎間盤樣本局部成分變化的實驗研究。
  7. Although samples were in a hot reflux for a long time at 85 in the experiment, and 5 ? molecular sieve of the adsorbed sample was acidized by hydrofluoric acid, the analytical method was tested to have little influence on carbon isotopic composition of the saturated hydrocarbons before and after complexation

    盡管實驗過程中樣品經過85長時間加熱迴流及吸附樣品的5 ?分子篩用氫氟酸酸化處理，但實驗結果經儀器檢測，證明該方法對正構烷烴碳同位素值影響因素不大。
  8. In this paper, the characteristics of the electroless nickel plating, the composition and fuction of the plating solution were introduced. at this base the low emissivity material was successfully prepared by the electroless plating method. the sample detected by edxa, sem, aes, ifr

    本文在系統介紹了化學鍍鎳工藝的特點、溶液組成及各組份的作用的基礎上，採用化學鍍方法制備低發射率材料，成功地在羰基鐵粉體和陶瓷粉體上實施了化學鍍鎳。
  9. The sample composition was analyzed by means of tg and x - ray diffraction. the following conclusions can be drawn from the experiments : given conditions, the sample powder that has the same xrd data as the standard fetioa can be gotten when use any method mentioned above ; the key in synthesis is to avoid the oxidation of fe2 +, so the whole process should performed under vacuum or neutral atmosphere, samples used by this study were prepared under nitrogen atmosphere ; the heat - treated time and temperature have some influence on the sample powder, results show that the proper time and temperature is 120 minutes and 1100 respectively

    研究結果表明：在合適的反應條件下，用上述三種合成方法都能得到xrd數據與標準fetio _ 3物相基本吻合的粉體；合成反應需要克服的主要問題是防止體系中fe ~ （ 2 + ）的氧化，因此，整個反應必須在真空或者非氧化性氣體保護下進行，本研究需要的樣品是在高純從保護下合成的；煅燒的時間和溫度對最終的產物也有一定的影響，研究發現：合理的煅燒時間和溫度分別為120分鐘和1100 。
  10. An example of faults diagnosis in a complicated electromechanical system - horomill is cited ; and according to its concrete features, this thesis covers the measuring and the collection of fault feature information, the composition of the software and the hardware of faults diagnosis system, and the collection of sample books. the author takes the algorithm of faults diagnosis of artificial neural networks to emulate the faults diagnosis of the horomill system. th e thesis proves the feasibility and the superiority of faults diagnosis of the artificial neural networks - based electromechanical system

    以輥碾磨這一復雜機電系統的故障診斷為實例，針對輥碾磨的具體特點，研究了故障特徵信息的檢測與提取、故障診斷系統軟體和硬體的構成以及學習樣本的選擇方法，並利用人工神經網路的故障診斷演算法對該系統的故障診斷進行模擬，證明了基於人工神經網路對機電系統故障診斷的可行性和優越性。
  11. The performance of this material is affected by many parameters, five of which, including exposure power, beam ratio, grating periods, thickness of sample, composition ratio are analyzed in detail by experiments. the results illustrate that weak exposure power and a 1 : 1 beam ratio lead to the good performance

    用實驗方法詳細分析了實驗條件（包括記錄光強、記錄角度（可換算成光柵周期） 、束比）對材料全息存儲性能的影響，並分析了材料本身的參數（包括材料厚度和單體比例）對材料全息存儲性能的影響。
  12. Abstract : the theory and composition of a low - cost high efficiency sensorless speed control system for brushless dc ( bldc ) motors is introduced. the position - sensing mathematical model of sensorless bldc rotor is discussed, and an application sample is presented

    文摘:分析了高效率低成本無傳感器無刷直流電機（ bldc ）速度控制系統的工作原理及系統組成，討論了無傳感器轉子位置檢測的數學模型，給出了應用實例。
  13. This dissertation mainly introduces and analyzes a design of data acquisition system of atomic absorption spectrophotometer based on epp the content of which includes : the basic theory and composition of atomic absorption spectrophotometer construction of particular hardware of the data acquisiton system the features of virtual device driver under windows 9x methods of desining the program via the vtoolsd of numega inc. application program edited by using delphi6 by analyzing the standard sample. the data acquisition system is reliable and feasible, which has been illustrated applied to shanghai hp 3200 atomic absorption spectrophotometer

    本論文主要介紹了一種epp模式的原子吸收光譜儀的數據採集系統設計。詳細闡述了原子吸收光譜原理和儀器結構及具體數據採集系統的硬體實現途徑。同時分析了windows環境下虛擬設備驅動程序的編寫特點，提供了numega公司vtoolsd開發工具下的虛擬設備驅動程序的具體實現方法。
  14. The spectral lines emitted from these species can be used to determine the sample composition. the wavelengths observed are characteristic of the individual elements present in the sample, and their intensities are related to the concentration of the corresponding species in the sample

    高功率密度的激光使樣品表面汽化，產生處于激發態的原子和離子，而激發態原子和離子的發射譜線可用於樣品成分的鑒定，發射譜線的強度與該原子對應的元素在樣品中的含量有關。
  15. For the sample with the content of fe2o3 is 9 %, the maximum mr value of the composition ( lao9sroimno3 ) o9i ( fe2o3 ) oo9 increased in the negative direction, and get the maximum - 7 % at 337k ; with the content of feio increased, the mr of the composition increased also, when the content of fe2o3 is 17 %, the maximum mr value of the composition ( lao. gsro imno3 ) o. 83 ( feio o. n can reach - 30 % at 338k, where applied magnetic field is 1. 5t

    含量為9的樣品，樣品的磁電阻值在238k時隨溫度的升高而逐漸向負的方向增大，在337k時達到極值7 ；對于fe 。 oz含量為門的樣品，樣品的磁電阻值在265k時隨溫度的升高而逐漸增大，兩種不同比例的復合體系都在很寬的溫區內表現出較大的磁電阻，尤其後者，在1 st外場作用下， 338k時mr達到極值30 。
  16. Study an effect of using sulfur - removal waste residue ( the vice - product produced by sulfur - removal device of the factory using coal as energy resource to absorb oxidizing sulfur, whose mainly composition is gypsum ) as an amendment to the alkali soil in theory. with certain water as leaching requirement leaching soil column indoor employed with certain quantity sulfur - removal waste residue after collecting and analyzing representative soil sample. collecting and analyzing the filtrate, then calculate the data and speculate the result to guide the field production

    本文重點是對煤煙脫硫廢渣（利用煤炭作為能源的工廠的除硫裝置消除硫氧化物后的副產物，主要成分為石膏）改良堿土進行理論研究，方法上以室內土柱淋溶模擬為主，採集有代表性的堿土並分析其成分后，採用小水量定額灌洗，收集分析濾液化學成分，進行推理分析計算並指導田間的生產實際。
  17. The saturation magnetization of the sample is 1. 79t close to the theoretical value of the same composition alloy

    試樣的飽和磁化強度為1 . 79t ，接近相同成分下合金的理論磁化強度的數值。
  18. The sample used for the kinetics research was cylinder in size of 37. 2 26mm molded at a pressure of 6mpa with a composition of 1 : 3. 0 of titania to active carbon

    首先，對鈦白粉、活性碳用碳熱還原反應合成氮化鈦進行了熱力學分析，證明了碳熱還原反應合成氮化鈦的可行性。
  19. The total energy expression of the sample is build through analyzing its energy composition. according to the principle of the minimum energy, using the connection between stress and strain and the connection between magnetostriction and magnetism strain, an expression for the mean field parameter is derived

    通過分析所研究試樣的能量組成，寫出了試樣總能量表達式；根據能量最小原理，利用應力、應變之間的關系和磁致伸縮系數、磁應變之間的關系，得到了分子場參數表達式。
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