low-density material 中文意思是什麼
low-density material
解釋
低密度材料-
Hypereutectic al - si alloys are known to be suitable for wear - resistance material because of its low density, high tensile properties and low coefficient of thermal expansion
高硅鋁合金的耐磨性好，強度高，密度低，熱膨脹系數小。 -
The high - power semiconductor quantum well ( qw ) laser is a kind of luminescence device with superior performance, it has longe - lived, low threshold current density, high efficiency, high luminosity and excellent monochromatic, coherence, directionality, etc. the high - power semiconductor laser is widely applied to the fields, such as military, industrial machining, communication, information processing, medical treatment, etc. the material ' s epitaxy is the foundation of the whole laser ' s fabricating, and it has important influence on the optics and electricity performance about the laser
大功率半導體量子阱激光器是一種性能優越的發光器件，具有壽命長、閾值電流密度低、效率高、亮度高以及良好的單色性、相干性、方向性等特點，廣泛應用於軍事、工業加工、通信及信息處理、醫療保健等領域。材料的外延生長是整個激光器器件製作的基礎，對器件的光學和電學性能有著重要的影響，生長不出優質的材料體系，獲得高性能的器件就無從談起，因此，材料的外延生長便成為了整個半導體激光器製作過程之中的重中之重。 -
Refractory fiber and product is manufactured by means of dry method and wet method. as an excellent insulation material, it has comparatively low volume density, good softness and very low thermal conductivity coefficient. sticking method, ancjoring method and folding method can be selected respectively. this product can be used in various industrial kilns & furmaces for lowering heat consumption
耐火纖維及製品是採用干法、濕法生產的具有較低體積密度、較好柔軟性、極低的導熱系數的優質絕熱保溫材料，施工時可分別採用粘貼法、錨固法、折疊塊形式施工，適用於各種工業窯爐降低熱耗之用。 -
The research of the new and high conductivity material of lithium ionic conductor is always an interesting issue in the material field due to its low potential, light weight and providing high cell voltage and energy density
由於鋰具有較負的電極電勢和較輕的重量，可以為電化學器件提供高的電池電壓和能量密度，所以鋰離子導體高電導率新材料的研究一直是材料研究領域倍受關注的課題之一。 -
Model jy light thermal insulating pouring material is new irregularly setting fire - resistant material which is made from the excellent and super powerful light aggregate, super minunt material, combine agent and additional agent. this material is series of new fire - resistant lining naterial with low density, high intensity, small thermal conductivity
Jy系列輕質保溫澆注料是一種新型不定型耐火材料，由優質超強輕質骨料、超細粉、結合劑和外加劑組成，是一系列密度低、強度高、導熱系數小的新型隔熱襯里材料。 -
The conclusions are as follows : ( 1 ) high - pressure water - atomization can be used to produce a pre - alloyed steel powder with high apparent density, high green strength, size - stability after sintering and low hydrogen - loss content ; ( 2 ) the higher smelting temperature and / or water pressure, the finer particle size of steel powders ; ( 3 ) when the atomization angle holds in a reasonable value ' s range the obtained powder will have a better particle size distribution ; ( 4 ) an optimum atomization technological parameters : liquid steel flux, water pressure and water prick angle was obtained ( 5 ) reduction variables ( temperature, holding time, material - bed ' s thickness and reducing gas flux ) have a significant effect on the particle agglomeration and properties of final powder was given ( 6 ) different alloying methods were developed to modify properties of ferrous powder materials and hence to broaden its applications in ferrous powder metallurgy industry
本文系統研究了水霧化預合金鋼粉生產工藝及合金化方法對鐵基粉末冶金材料性能影響，詳細研究了冶煉、霧化、還原工藝參數對預合金鋼粉化學成份和物理性能影響，並得出如下結論： （ 1 ）採用高壓水霧化技術可用於生產高密度、高強度、尺寸穩定性的低氫損含量的水霧化預合金鋼粉。 （ 2 ）冶煉溫度越高，高壓水壓力越大，所得生粉顆粒粒度越細。 （ 3 ）水錐角調整在一個適當角度范圍內可獲得粒度組成較好的生粉。 -
Cfrp tendon is a new composite material manufactured by special technology, it has many advantages such as high - strength, low - density, better corrosion - resistant and so on, so it can potentially replace steel tendons in normal concrete structures and prestressed concrete str uctures, particularly in areas where corrosion is a problem
碳纖維塑料筋是採用特殊工藝製造的新型復合材料，它具有強度高，密度小，耐腐蝕等優點，能夠取代普通混凝土結構和預應力混凝上結構中的普通鋼筋和預應力鋼筋，尤其是在鋼筋銹蝕問題嚴重的地區。 -
This product is a new kind of heat insulating material made by alumina bubble with relatively high strength, low density and thermal conductivity
本產品是由氧化鋁空心球製作的新型隔熱材料，強度較高，密度和熱導率低。本產品在高溫下使用能大量節省能源。 -
The study solves engineering problem as follows : ( 1 ) the systematic study on the historical course of xigeda strata deposit and geologic environment includes strata, lithologic characters and constitution et in the liangshan and panzhihua region. the results show that the xichang - panzhihua express way is controlled by the anninghe fault and the xigeda fault, the earthquake frequently happen in the region of pass, the different sedimentation number is more great, they effect the road building, safety in operation and structure belong road ( 2 ) because in some place the xigeda strata is foundation and roadbed, the study on the basic properties of the xigeda strata include density, moisture content plastic and liquid limit graduation. the results show that the xigeda strata is deposition in lake, the main component is mudstone and sandstone, the fine particle is main, it has some viscosity, the moisture content of mudstone is different the it of sandstone, the other property are likeness. the xigeda strata has no dilatation on total, some claystone have low and medium dilatation ; ( 3 ) the study on the basic properties of xigeda filler include the composition of matter the biggest standard dry density, the optimum moisture content the results show that xigeda filler can use as road material, it is well grade filler and admixture filler on essence, its compaction index should change in different place because the property is controlled by mudstone and sandstone that change is great in different place ; ( 4 ) the study on the xigeda filler craft used as express way roadbed, includes suitable thickness, compaction numbers and methods and equipment choice et
公路沿線廣泛分佈有昔格達地層，昔格達地層能否用作高速公路路基填料，國內沒有先例，本論文就是結合導師的科研項目，在非典期間，現場長達5個月的工作，完成了從試驗、現場施工工藝到路堤分層沉降監測等工作，是面對生產實際，認識昔格達地層的性質和其作為地基、路基和填料應用中面臨的問題進行的研究。主要的研究內容有：對攀西地區地層巖性、構造等地質環境和昔格達地層的沉積歷史過程作了系統的分析，研究表明西攀高速公路主要受安寧河斷裂和昔格達斷裂影響，通過地區地震活動頻繁，差異沉降較大，對公路建設、安全運行和沿線構築物設計有較大影響；由於昔格達地層在有些路段作為地基、有些作為路基，對其基本性質進行了研究：包括天然密度、含水量、塑液限、顆粒級配等指標的試驗研究。研究成果表明：昔格達地層為湖相沉積，主要為砂巖和泥巖，它以細粒組為主，同時粘粒的存在，使其具有一定粘性。 -
In this thesis, a design scheme is introduced about whole early - warning system ’ s structure according to the optical needs. the focus is placed on the pointing speculum ’ s light - weighting design. through comparison, sic is selected as the speculum ’ s material which has features of high strength, low density, well comprehensive performance and being adaptable for space environment
本文首先根據光學需要對導彈預警系統總體結構進行了設計，重點對其中的關鍵部件指向反射鏡進行了輕量化設計，通過比較選擇了合適空間環境且具有高強度、低密度、綜合性能好的sic作為反射鏡的材料，運用有限元分析軟體ansys對幾種輕量化結構分別進行優化，通過比較最後確定指向反射鏡輕量化結構及尺寸。 -
Standard test method for nondestructive assay of special nuclear material in low density scrap and waste by segmented passive gamma - ray scanning
分段無源射線掃描法對低密度廢料及殘渣中特殊核材料進行無損檢驗的標準試驗方法 -
Silica ( sio2 ) is a very promising material used to fabricate the optical waveguide for its low insertion loss, efficient fiber - to - chip coupling, high integration density and compatibility with microelectronic process. it is possible to realize the monolithic integration of optical devices with microelectronic devices and the passive devices with the active ones
而硅基氧化硅光波導以其低的插入損耗、能有效的與光纖耦合、集成密度高、可以充分利用現已成熟的微電子技術等特點成為較為理想的實現波導結構的材料。 -
Cavity sandwich panel infill is made of paper triangle cavity material, which is a kind of low density and environmental material. it could increase lateral resistant ability of frame while decrease the weight of the structure
空腔結構材料為一種紙基三角空腔結構材料，它是一種新型輕質節能環保型復合材料，用於填充墻鋼框架結構中既可以提高結構的抗側力性能，又可以減輕結構自重。 -
Magnesium is increasingly considered competitive alloy in new product design owing to its advantageous material properties such as low density and high specific strength
摘要在輕、薄、短、小等新產品開發之發展趨勢下，具有低密度、高比強度與易回收優點的鎂合金逐漸受到重視。 -
It was found that the introduction of ca2 + enhanced the sinterability of the material. the relative density of sintered specimens increase with the content of ca2 + in the composition range of 0 < x < 0. 3. it was confirmed that a high relative density can be obtained at relatively low sintering temperatures by using uniform, high surface area la1 - xcaxcro3 powders, which modifies the crystalline structure and microstructure of ceramic specimens
研究結果表明， a位ca ~ （ 2 + ）的引入在一定程度上能夠降低材料的燒結緻密化溫度：細小、均勻、高比表面積的粉料能夠有效降低材料的燒結緻密化溫度；燒結溫度的降低可以減少la _ （ 1 - x ） ca _ xcro _ 3中液相含量和鉻氧化物的揮發，有利於材料晶體結構、顯微結構的改善。 -
Technological conditions of the cathode material lini1 - xcoxo2 using like sol impregnation method at air atmosphere have been investigated systematically. the structure and cycling performance of the sample linio. 7coo. 3o2 obtained at optimal conditions have been further studied too. the results indicates that the sample exhibits good electrochemical properties when cycled at low current density, and the material has little volume changes, showing good stru
通過對不同充放電電流下材料的xrd圖譜的特徵及循環穩定性的分析，發現空氣中合成的lini _ （ 0 . 7 ） co _ （ 0 . 3 ） o _ 2材料以低電流密度充放電時具有良好的電化學穩定性，當材料以低電流密度在0 . 3 1 - y 1 . 0范圍內進行脫/嵌鋰反應，材料的體積變化較小，結構穩定。 -
The experts confirmed that the nh2c and nh15a high permeability material and ferrite cores have adapted well with the improvement of the electrons which would be smaller, thinner and lighter. the same time the cores assume so many advantages such as high flux density, high curie temperature, high frequency, low - loss etc. the technical indicators of the cores have been the nation - lead position in the same species
由行業專家組成的鑒定委員會一致認為，上述兩項產品採用濕法制粉工藝，通過配方設計多組元添加燒結條件控制等工藝改進，控制了材料的微結構和性能，產品批量生產的一致性好，成品率高，性能處于國內領先水平。 -
A medium frequency - small size vector hydrophone of co - vibrating type is wrapped with low density compound material and in shuck only one piezoelectric ceramic accelerator is used for each channel to measure the vector components of the underwater acoustic field
摘要中頻小型同振式矢量水聽器採用低密度復合材料作為矢量通道外殼、壓電加速度計作為內部振動傳感器，以拾取水下聲場中的矢量信息。 -
In the paper, three methods of evaluation of cushioning properties and energy - absorption capability of low density porous material are discussed, and a mew method of evaluation of damping of vibration is introduced, taking silicone rubber foam as an example, the use of these methods in rational choice materials and priority design is expounded
摘要本文對低密度多孔介質緩沖吸能特性的三種評估方法進行了分析，進而提出了評估其減振特性的剛度曲線方法，並以泡沫矽橡膠為例，具體闡述了上述評估方法在合理選材、優化設計中的應用。 -
Abstract : in this paper, the cellular glass was introduced by using waste glass as raw material, added a little foaming addition and chemical material, with low - temperature ( 760 - 810 ) foaming technigue. the influence has been studied between material ' s composition and foaing technique to the properties of cellular glass and the suitable composition of cellular glass and foaming technique has been obtained. the cellular glass has many advantages which were low density, high pressure intensity, short period of firing and easy to be controlled
文摘:利用回收的廢玻璃為泡沫玻璃的主要原料，添加少量的發泡劑和一些其它化工原料，採用低溫（ 760 810 ）發泡工藝，探討了配合料的配方組成和不同的發泡工藝制度對泡沫玻璃性能的影響，通過比較，得出了合理的泡沫玻璃的配方及發泡工藝制度；試制出的泡沫玻璃具有容重低，抗壓強度大，燒成周期短，易於控制的特點。
分享友人