真空區 的英文怎麼說
中文拼音 [zhēnkōngqū]
真空區
英文
airless space-
Sicp / al matrix composites, with 5, 15 and 25 % volume fraction of sic particles, were prepared by vacuum hot - pressing sintering processing in this paper. based on mechanics properties, sem observation and energy dispersive x - ray analysis, the interface reaction phenomenon of sicp / al composites made by vacuum hot - pressing sintering, as well as the reinforcement and fracture mechanisms of this composite were analyzed. the dynamic responses of sipc / al composites were studied by a split hopkinson high - speed pressure bar impact system which strain rate was from quasistatic state strain rate ( 3. 3 10 - 3s - 1 ) to dynamic state strain rate ( 5. 2 103 s - 1 )
本研究以武裝直升飛機防護裝甲材料為研究對象，採用真空熱壓粉末冶金燒結工藝制備了含sic顆粒體積分數分別為5 、 15和25的sic顆粒增強鋁基復合材料，結合其力學性能、掃描電鏡和界面微區能譜分析結果，分析了sic _ p al復合材料的真空燒結過程中的界面現象，以及材料增強和斷裂機理，並利用hopkinson高速壓桿沖擊實驗系統對其從靜態到動態（應變率為3 . 3 10 ~ （ - 3 ） s ~ （ - 1 ） 5 . 2 10 ~ 3s ~ （ - 1 ） ）的壓縮破壞響應進行了研究，分析了不同體積分數sic _ p al復合材料高應變率壓縮載荷下，材料的變形和微觀損傷機理，以及利用高速沖擊空氣炮測定了改復合材料制備剃度復合板的穿透性能。Meixing electronics factory is major in the vacuum tube stereo power amplifier, which is located in the nanhai city ， owned a workhouse over 1300 square meter, with five plant, they are box, seal and transformer circling 、 debugging & check, we also have the machine process, such as milling machine 、 punch 、 drill press 、 electric welding 、 matrix 、 incision machine, and radio tube test machine. we have realize the product line manufacture, the monthly whole output is over 200 sets
美星電子是一個專業製造真空管身歷聲功率放大器的加工廠，位於廣東南海市黃岐工業區，擁有廠房一千三百平方米，工廠分機箱加工、焊接組裝、變壓器繞制、煲機老化、調試檢測五個車間，機械加工設備擁有銑床、沖床、創床、鉆床、電焊、模具製作、切割等二十多臺，電子管及整機檢測調試儀器十餘臺，該廠實現了配套設備、流水作業，每月可生產膽機二百臺以上，可謂中國專業生產膽機最大規模的工廠。In 1909, ernest rutherford showed that atoms were mostly empty space, revising the model of an atom to a tight positive nucleus containing the protons and neutrons with electrons around it ; by 1913, danish physicist neils bohr envisioned a planetary arrangement in which the electrons orbited the nucleus at different energy levels
在1909年，歐內斯特?盧瑟福展示原子大部分是真空區，修正的原子模型就是緊密的陽性核包含質子和中子，電子圍繞中子旋轉；到1913年，丹麥物理學家尼爾?波爾想象了一個電子以不同能量水平面圍繞原子核旋轉的行星排列。The value of pore water pressure dissipation can be divided into two parts. one part is produced by vacuum degree and the other part by groundwater table lowering
加固區內地基中的孔隙水壓力的最大消散值可分為兩個組成部分：一為真空度的直接傳遞導致的孔壓下降值；二為抽真空引起水位線下降進而引起的孔壓消散值。At the initial stage of planar technique, b was employed as ideal diffusion impurity in base - region of npn si planar devices because of the match of its solid - solubility and diffusion coefficient in si with those of p in emission - region, and the good shield effect of sio2 film to b. but because of the relatively large solubility ( 5 1020 / cm3 at 1000 ) and the small diffusion coefficient, the linear slowly - changed distribution of acceptor b in pn junction can not be formed, which could not cater to the requirement of high - reversal - voltage devics. thereafter b - a1 paste - layer diffusion technology and close - tube ga - diffusion technology had been developed, while the former can lead to relatively large the base - region deviation and abruptly varied region in si, which caused severe decentralization of current amplification parameter, bad thermal stability and high tr ; the latter needed the relatively difficult pack technique, with poor repeatability, high rejection ratio, and poor diffusion quality and productio n efficiency
在平面工藝初期，由於b在硅中的固溶度、擴散系數與n型發射區的磷相匹配， sio _ 2對其又有良好的掩蔽作用，早被選為npn硅平面器件的理想基區擴散源，但b在硅中的固溶度大（ 1000時達到5 10 ~ （ 20 ） ，擴散系數小， b在硅中的雜質分佈不易形成pn結中雜質的線性緩變分佈，導致器件不能滿足高反壓的要求，隨之又出現了硼鋁塗層擴散工藝和閉管擴鎵工藝，前者會引起較大的基區偏差，雜質在硅內存在突變區域，導致放大系數分散嚴重，下降時間t _ f值較高，熱穩定性差；後者需要難度較大的真空封管技術，工藝重復性差，報廢率高，在擴散質量、生產效率諸方面均不能令人滿意。The company mainly engages in development and manufacturing of medium voltage vacuum interrupters, vacuum circuit breakers ( vcb ) and gas insulated switchgear ( gis ) as well as after sales services
公司位於江蘇省無錫高新技術產業開發區內，主要從事中高壓陶瓷真空開關管，固封式真空斷路器，氣體絕緣開關設備及其相關產品的開發、製造、市場銷售和售後服務，致力於中國的電力工業。Ningbo dione electric co., ltd located in yuyao city zhejiang province with beautiful scenery, convenient transptation, developed economic, and specialized in variety of vacuume bulb, full bulb and special bulb
寧波宇潤電器有限公司是一家生產各種真空泡，充氣泡和特種燈具的專業廠家。公司位於風景秀麗，交通便捷，經濟發達，人傑地靈，舉世聞名和歷史悠久的河姆渡文化遺址所在地浙江省餘姚市（泗門鎮工業園區329國道旁） 。How many pumps were turned on should be based on the dynamic design according to project target. and how many pumps should be in operation in standard shut off procedure. it was approved that although the theoretical boundary of decline of groundwater level is 10m, the actual boundary is only about 6m
提出了一些與真空預壓加固地基設計相關的概念和處理方法，如定義真空預壓加固區場地形狀系數，提出按加固土體體積來確定射流泵數量、根據工程需要動態設計開泵量、增加停泵標準中對開泵量的規定等設計思想等，論證了真空預壓加固地基時地下水位下降的理論極限深度為10m ，而實際極限深度約為6m 。The results of the experiments show that the ti3al - tcll dual alloys, by vacuum - electron - beam weld, hot die forging and 680c / 12h, ac, heat treatments, have satisfied synthesis properties of intensity, plasticity, hardness. and also it is the feasiblie way. this will establish the supporting technology for the manufacture of the compress disk in the areoengine
實驗結果表明，經真空電子束焊接ti _ 3al ? tc11雙合金經過熱模鍛造和680 12h ， ac或815 1h + 700 8h ， ac熱處理后，焊接區組織過渡均勻，可以使得焊縫處強度在室溫拉伸時高於ti _ 3al ，而在600拉伸時高於tc11合金，獲得強度、塑性、硬度均令人滿意的綜合性能，且是一條可行的工藝路線。When the relief valve opens, as in the accompanying air - in / water - out diagram, the right - hand channel admits air to the top of the reduced pressure zone, relieving the zone vacuum
當安全閥開啟時，伴隨著氣進/水出隔膜，右側渠道使得空氣進入減壓區頂部，消除減壓區的真空。Assists to fix the equipment problems in the vacuum coating areas, to minimize the break down time
協助解決真空鍍膜區的設備故障，最大限度降低壞機時間。People has higher requirement for the quality of laminating machine along with the progressive spread of board decorating material, in order to need the requirement, we designed, this machine - high - low pressure double air pipelines laminating machine
摘要隨著板式裝飾材料的逐步推廣，人們對覆膜質量的要求也越來越高，為了適應廠家的需要，我們設計了高低壓雙氣道覆膜機，特別針對其核心部分真空系統進行了大膽的改革，本文對其原理及與現有覆膜機的區別等做了詳細闡述。Based on the results from both laboratory test and field application of vacuum preloading it can be concluded that soil is water - saturated in the processes of vacuum consolidation or vacuum preloading. thus, the consolidation properties in negative - pressure area cannot be calculated by using the theory based on non - saturation soil. negative pore - water pressure and suction were specified
在室內試驗及現場試驗基礎上，證明真空預壓加固地基過程中，負壓區土體仍是飽和的，不能用非飽和土理論來計算負壓區的固結性狀，並辨析了負壓與吸力的概念。The primary purpose of this feasibility study report is to study and demonstrate the feasibility of establishing a sino - foreign joint venture in electronic city, policy area, zhongguancun science park, beijing for the manufacturing of vacuum freezing dryer and its spare parts in the prc and setting out the scale and scope of the proposed project
本可行性研究報告的主要目的是研究並證明在北京市中關村科技園區政策區電子城內設立中外合資企業生產真空冷凍乾燥機及其零備件的可行性，並詳述擬議中的該項目的規模和范圍。Vacuum spectral region
真空光譜區Manufactured safety vacuum release systems for residential and commercial swimming pool, spas, hot tub and wading pool suction systems
住宅區和商業區游泳池健康中心熱浴盆和淺水池水抽吸系統的人造安全真空排放系統Product variants are also offered for tasks in pure vacuum zones or combined vacuum - pressure zones
產品變量還可以適合完全真空區域或者真空壓力混合區域中的作業。Manufactures dryers and refrigeration equipment, filters, compressors, desiccant
-華南及中南地區真空設備研發和生產基地。( 3 ) through the study of electrical property of irradiated rutile by high - dose neutron, the curse of relationship of conductivity and temperature has been abtained. according to this relationship, the conducting behavior in diflrent temperature is also studied
本論文工作還對高注t中子輻照后金紅石晶體的電學特性進行了研究，得到了它在空氣和真空中的電阻與溫度的關系，分析了各個溫區的導電機制。Polycrystalline silicon - examination method - vacuum zone - melting on boron
硅多晶真空區熔基硼檢驗方法分享友人