金屬利用系數 的英文怎麼說

中文拼音 [jīnzhǔyòngshǔ]
金屬利用系數 英文
coefficient of metal efficiency
  • : Ⅰ名詞1 (金屬) metals 2 (錢) money 3 (古時金屬制的打擊樂器) ancient metal percussion instrum...
  • : 屬名詞1 (類別) category 2 [生物學] (生物分類系統上所用的等級之一) genus 3 (家屬; 親屬) fami...
  • : Ⅰ動詞1 (使用) use; employ; apply 2 (多用於否定: 需要) need 3 (敬辭: 吃; 喝) eat; drink Ⅱ名...
  • : 系動詞(打結; 扣) tie; fasten; do up; button up
  • : 數副詞(屢次) frequently; repeatedly
  • 金屬 : metal
  • 系數 : [數學] coefficient; ratio; modulus; quotient; factor
  1. On the bases of the galaxy evolution theory, we use the therotical chemical evolution model of three zone ( such as halo, thick disk and thin isk ) and multi - phase ( diffuse gas, molecular clouds, stars of both low and high mass, the remnants ). by comparing with the observational constraints, such assurface densities, age - metallicity relation, g - dwarf metallicity distribution in the solar neighbourhood and the correlation between [ a / fe ] and [ fe / h ], supernovae rates, infall rates. the rationality of the model is verified. based on the theory model, we calculate the abundance of neutron capture element

    本文正是在銀河化學演化的基礎上,銀河的三成分( threezone ) (即暈、厚盤和薄盤)多相( multi - phase ) (氣體,分子云,大、小質量恆星以及剩餘物質)的化學演化的理論模型,通過與觀測約束(質量面密度、場星的年齡-豐度關、太陽附近g矮星含量分佈函、三成份的特徵量、元素的星化學演化、超新星的爆炸率、內落速率等)的比較,來檢驗模型的合理性。
  2. The results indicated that the dimension, shape and purity of base material could meet the functional demand of solid lubricant ; the thermal decomposition temperature of ptfe resin exceeds 400 c, but organic and inorganic packing filler added in ptfe made the water absorption rate of composite material increased, melting temperature and decomposition temperature decreased, in the meanwhile oxidative decomposition reaction was accompanied ; polar groups such as c = o, c - o - c and so on in the carbon fiber surface is advantageous to increase compatibility with other components and interlayer shearing strength ; uniform design experimental method could help to find the relationship between formula and frictional property by relatively small tests. the developing trend of each formula ' s friction coefficient could be showed by fitting curve ; the friction coefficient with no copper powder or graphite in formula was relatively big. this fact showed that copper powder and graphite should be used cooperatively ; it was found that when the ratio of copper powder to graphite by weight is 15 : 60, 30 : 30 - 40 and 60 : 15 - 30 respectively, the friction coefficient was relatively small. the degree of crystallinity of pure ptfe reached maximum by air cooling and the abrasion loss also reached maximum among three ones ; at the same time, the abrasion loss of solid lubricant sample was also the biggest among three ones ; when solid lubricant matched with 45 # steel axle or gcrl5 steel axle, lubricant transfer film could be formed on metal surface, thus direct contact between the surface of metal friction pair rings was reduced. their working life was elongated extremely ; there was mainly much graphite, a little ptff, moo3, feso4, cus and so on in lubricant transfer film

    試驗結果表明:所選原料的尺寸、形狀及純度可滿足固體潤滑劑的性能要求;聚四氟乙烯樹脂熱分解溫度超過400 ,但在ptfe中加入無機填料會使復合材料吸水率提高,熔融溫度及分解溫度降低,且伴有氧化分解反應;碳纖維表面含有c = o及c - o - c等極性基團,有於提高其與其它組分的相容性,提高層間剪切強度;均勻設計試驗方法能夠較少的試驗次找出配方與摩擦性能間的關,擬合曲線基本能表示各配方的摩擦發展趨勢;配方中不加銅粉或不加石墨,其摩擦均較高,說明銅粉和石墨應該配合使;當銅粉15份、石墨60份時,銅粉30份、石墨30 - 40份時,銅粉60 、石墨15 - 30份時,摩擦均具有較低值;純聚四氟乙烯樹脂在空氣冷卻時結晶度最大,磨損量也是三者中最大的;同時,固體潤滑劑試樣在空氣冷卻時的磨損量也是三者中最大的:不論是固體潤滑劑與45 #鋼軸配副或是固體潤滑劑鑲嵌入銅套后與gcr15鋼軸配副,在表面均可形成潤滑轉移膜,從而減少摩擦副表面間的直接接觸,大大延長其使壽命;轉移膜中主要含有較多的石墨、少量聚四氟乙烯、 moo 。
  3. They are applied to different situations and verified by experiments. analysis model of small ap oblique penetrating ceramic / metal light armor is established on the basis of energy model and the assumption of ellipse absorbing the same energy in back plate, giving the predictable formula about ballistic limit velocity. with energy model the optimization design in relation to ceramic / metal light armor is analyzed and the optimal coefficient of ceramic / metal composite armor is gained

    本文的主要研究內容如下: (一)建立了小型穿甲彈垂直侵徹陶瓷/輕型裝甲的動量模型和能量模型,它們分別適不同情況,並通過試驗驗證;基於能量模型和背板橢圓吸能相同假設,建立了小型穿甲彈斜侵徹陶瓷/輕型裝甲的分析模型,給出了彈道極限速度預測公式;能量模型對陶瓷/輕型裝甲的優化設計進行了分析,給出了陶瓷/復合裝甲的最佳優化
  4. The sculpture is constructed with a double - shell system of copper and zinc. these two materials have a great degree of difference in their thermal conductivity. the materials are structurally bonded together to allow for their varying degrees of expansion

    雕塑採了銅和鋅雙層板作面層,兩種不同的導熱,隨時表現出冷縮熱脹的效果,創造出一個抽象和簡潔的動感雕塑,讓人們感覺出周圍溫度的變化和陽光的美。
  5. This program can predict the wall temperature 、 internal wall heat tranfer coefficient 、 fluid temperature and entropy profile along the water wall. all of these provide an important foundation for designing this type of water wall structure to ensure the safety of the boiler operation. this hydrodynamic calculation program and the results can be used to analyze operation reliability and structure design of water wall system

    所開發的程序對設計的超臨界cfb進行了計算,給出不同負荷下,水冷壁出口工質溫度分佈,水冷壁受熱面不同位置處的壁溫、內壁放熱、流體溫度焓值分佈,以及不同管子的流動壓降等結果,為分析鍋爐工作可靠性及水冷壁統的結構設計提供了重要依據。
  6. Because there are many kinds of matrixes in titanium matrix composite, we select some typical ones as investigated subject in many titanium alloys or titanium aluminide intermetallics, and then simulate the distribution of thermal residual stresses under the appropriate composites fabrication and heat treatment parameter. we not only hope to seek better titanium matrix, but also discover the relationship between the material properties and the thermal residual stresses, and then provide some theoretical guidance for the selection of the matrix in titanium matrix composites

    鑒于當前鈦基復合材料中鈦基體的多樣性,我們將在各種類型的鈦合和鈦鋁間化合物中,挑選出較為典型的作為研究對象,本文得到的較為理想的復合材料加工和熱處理工藝參,逐一模擬它們的殘余熱應力,找到殘余熱應力分佈較為理想的鈦基體,並且,希望能夠尋找到材料性能與熱殘余應力的相互關,為鈦基復合材料基體的選擇提供一定的理論指導。
  7. ( 5 ) the ability of carry out a porous shock compression experiments with uncertainty less than 20 % has been had, and then there is a possibility to obtain at high pressure with uncertainty less than 10 %. ( 6 ) another method to get, utilizing the method 3 p _ ( c ) and shock compression data, has been investigated. it has been shown preliminarily that there a simple phenomenal project to calculate by utiliaing this method

    第三方面,考察了以實驗據計算的一些情況,獲得的主要結果為( 5 )就目前所能達到的實驗精度,開展具有適當初始疏鬆度的疏鬆材料的沖擊壓縮實驗可提供不確定度10的高壓實驗測量值; ( 6 )本文給出的冷壓與沖擊壓縮實驗據聯立的方法計算了大量的寬熱力學范圍的男,初步的分析表明,以該方法為基礎可形成一種更多保留實驗信息的gruneisen唯象計算方法。
  8. Following these two examples of two and three phases, regarding ternary and quarternary metallic melts involving eutectic as melts consisting of three and four non - homogeneuos solutions correspondingly, and using thermo - dynamic parameters of binary metallic melts involving eutectic, calculating models of mass action concentrations for ternary symmetrical melts formed from similar metastable compounds, ternary unsymmetrical melts formed from unsimilar metastable compounds and quarternary metallic melts involving eutectic have been formulated

    仿照這兩個二、三相熔體的例子,將含共晶體三、四元熔體看作由3 , 4個溶液組成的非均相熔體,並含共晶體二元熔體的有關熱力學參,針對由同類亞穩態化合物組成的對稱型三元、不同類型亞穩態化合物組成的非對稱型三元及四元含共晶體熔體,制定了相應的作濃度計算模型。
  9. Firstly, this paper summarizes modern weaponry stealth technology at home and abroad, and lays special emphasis on analyzing stealth problem of cruise missile ’ s guidance head cover, aerocraft radar canopy and other privileged sites. secondly it makes a research on related theories of transparent metallic mesh that applied to missile ’ s guidance head cover and aerocraft radar canopy, and deduces relational expression between transparent metallic mesh structural parameters and radar wave - shielding efficiency, infrared transmitting. we use laser direct writing technique to fabricate a metallic mesh ( dimension : 70mm 70mm ; line width : 5 m ; period : 350 m ) on glass surface, then do experiment to test radar wave - shielding of metallic mesh via radar transmitting and receiving device

    本文首先綜述了國內外現代武器統隱身技術方法;重點對巡航導彈導引頭罩和飛機雷達艙罩等特殊部位的隱身問題進行了研究,研究了網柵於導彈頭罩和飛機雷達艙罩隱身的相關理論,推導了網柵結構參對雷達波屏蔽效率和透紅外關式;激光直寫工藝,在玻璃表面上製作了一塊面積為70mm 70mm ,線寬為5 m ,線周期為350 m的網柵;在實驗室里雷達發射和接收裝置測試了網柵對雷達波的屏蔽實驗;認為網柵技術對雷達波具有一定的屏蔽作,而且不影響精確制導的紅外線高效透過。
  10. Characters of the flow field of molten metal in mhd caster are s imulated and analyzed by means of numerical simulation. relationship between flow field of molten metal and the number of magnet poles, arrangement of magnet pole s, rotating velocity of magnetic field as well as helical arrangement of permanen t magnets is revealed. it can be used as reference for optimizing design of perma nent caster

    值模擬對不同磁場條件下的永磁鑄機液流場特徵進行了模擬分析;揭示了液流場與永磁體極、磁極排布方式、磁場旋轉速率以及永磁體螺旋式排布之間的關,為永磁鑄機的優化設計提供了參考依據。
  11. Main content of this study are as follows. ( 1 ) establish the information system of environmental monitor using the language and gis software, build up the information system for this region, gold mine environmental spatial data base, attribute data base and analysis model data base

    研究的主要內容包括: ( 1 )建立環境監測信息相關地理信息統軟體和語言軟體進行二次開發,構建起礦環境空間據庫,據庫和分析模型據庫。
  12. A five - phase numerical model based on prism coupled is derived from maxwell equation and fresnel equation. using the professional software - mathcad, characteristic of this numerical model is simulated. the relationships between depths of the metal film, bio - sensitive film, cover slide, the refractive index of bio - sensitive film and the resonant angle ospr has been discussed respectively

    根據maxwell方程和fresnel方程推導出5層棱鏡耦合spr值化模型,學軟體mathcad對該學模型進行了模擬,討論了膜厚度d _ 2 、生物膜厚度d _ 3和折射率n _ 3 、載玻片厚度d _ 1與諧振峰值_ ( spr )的關
  13. In order to otain high quality zno thin films, we, for the first time, employ the plasma enhanced chemical vapor deposition ( pecvd ) to prepare high quality zno thin film at low temperature using a zinc organic source ( zn ( c2h5 ) 2 ) and carbon dioxide ( co2 ) gas mixtures. the effects of the growing condiction and the native oxide layer of si substrate on the quality of zno thin films was studied in detail. to prepare p - zno and overcome the dufficulty of reverse due to the interaction between the n atomic, we obtain high qulaity p - zno by a easy way of thermal zn3n2

    為了在低溫下制備高質量的氧化鋅薄膜,我們採有機源和二氧化碳氣源,首次等離子體增強化學氣相沉積的技術在低溫下制備了高質量的氧化鋅薄膜,統地研究了生長條件以及襯底表面氧化層對薄膜質量的影響,確定了生長高質量氧化鋅薄膜的優化條件;為獲得p - zno材料,克服在zno中摻n雜質間相互作影響摻雜效率不易獲得p - zno的困難,我們通過熱氧化zn3n2的方法制備了p - zno ,獲得了一列研究結果: 1 、詳細研究了氣體流速比,襯底溫度和射頻功率實驗參對氧化鋅薄膜特性的影響。
  14. The principal work in this paper is to investigate the third - order nonlinear optical properties of three new organometallic complexes with z - scan technique, and study the molecule structural vibration of these complexes. in order to further understand their nonlinear optical characters there are six chapters in this paper, which can be divided into three sections : in the first section, i. e. chapter one, the current status of the development and practical applications of nonlinear optics are introduced briefly the third - order nonlinear optical effect is introduced particularly

    本文的工作主要是單光束z掃描技術研究了三種新型有機化合物的三階非線性光學特性,並且拉曼光譜技術探索了這些化合物的結構振動信息,試圖從結構方面更深入的了解其非線性光學性質。論文共分六章,其主要內容概括為三個部分:第一部分,即論文的第一章,簡單介紹了非線性光學發展的現狀以及非線性光學的現實應和意義,著重介紹三階非線性光學效應,z掃描方法測量三階非線性光學的方法和理論。
分享友人