弧電位 的英文怎麼說
中文拼音 [húdiànwèi]
弧電位
英文
arc potential-
In the simplified model the feeder switches are regarded as the vertexes and the feeder lines as the arcs of a graph
簡化模型把配電網描述為有權的節點和弧的圖,在此基礎上進行故障的定位、隔離和恢復處理。Backing weld procedure technique of all - position narrow gap and thick - walled pipe welding is developed about all - position single - pass welding section analysis, wire feeding behavior, weld arc length, welding current analysis, procedure and joint test. the achievement has general guide meaning to producing and testing all - position welder
從單焊道全位置區段、送絲行為、焊接弧長(電壓) 、電流行為分析、工藝試驗和接頭檢驗等幾方面介紹管道全位置打底焊工藝特點,其研究成果對全位置焊接機的製造和調試具有普遍指導意義。Abstract : backing weld procedure technique of all - position narrow gap and thick - walled pipe welding is developed about all - position single - pass welding section analysis, wire feeding behavior, weld arc length, welding current analysis, procedure and joint test. the achievement has general guide meaning to producing and testing all - position welder
文摘:從單焊道全位置區段、送絲行為、焊接弧長(電壓) 、電流行為分析、工藝試驗和接頭檢驗等幾方面介紹管道全位置打底焊工藝特點,其研究成果對全位置焊接機的製造和調試具有普遍指導意義。Offering options of soft / hard arc and arc force for all - position welding
備有軟/硬電弧及推力電流選擇,實現全位置焊接的要求Abstract : a new waveguide which can change the wide wall of a rectangular waveguide into a symmetric arc wall is named as a cam - rectangular waveguide. comparing to sectoral waveguide, the new waveguide has the same voltage characteristics and is easier to be produced and fixed. an approximate formula of the dominant mode fields and the normalized conductance of a longitudinal resonant slot cut in the curved wall of a cam - rectangular waveguide are given. a resonant slot linear array in c & x band is designed, in which the slot voltage distribution is equiphase and the input is matched. the input voltage stationary ware ratio and the h - plane pattern of the antenna are measured. the experimental results show the conformance with theoretical results
文摘:把常用的矩形波導一個寬面改成圓弧形構成的波導稱為圓突-矩形波導.這種波導與扇面波導相比:電性能相當;波導管結構更加簡單,容易加工,便於安裝.文中給出圓突-矩形波導中主模場,圓曲面上縱向槽歸一化諧振電導近似公式.設計了c和x波段波導曲面縱向諧振縫隙線陣,縫隙電壓相位為同相分佈,輸入端匹配.實際測量了天線輸入端電壓駐波比和h面方向圖,理論與實驗相吻合It was found that the substrate floating potential changes a lot when the grounded state of arc source changed
在實驗過程中還發現弧源不同的接地方式對基片臺懸浮電位有很大的影響。Under typical discharge condition, the substrate floating potential is - 5v as the arc source is floated to the ground, but drops to - 60v in the case of the anode being grounded
在典型的放電條件下,當陽極接地時,基片臺懸浮電位最高達- 60v ,而當陰極接地或弧源懸浮時,該電位通常只有- 10v左右。The main work is done with the help of model experiment. in the flood - relief experiment, the flood carrying capacity of spillway tunnel is checked. in the hydraulic experiment of the diversion power conduit system, the followings are studied : the flow condition and fluctuation in the surge chamber, the distribution of flow velocity before the rack in the surge shaft, the amplitude of stage in the quick gate bay etc. the test step, content and results of different proposals are introduced in details
本項優化試驗研究的目的主要在於,通過泄洪系統整體水力學試驗,校核泄洪洞的泄流能力;通過發電引水系統整體水力學試驗,研究調壓井內水流流態和水位波動情況、調壓井內攔污柵前流速分佈情況;確定快速閘門井內水位波動幅度;試驗確定壓力管道水擊壓力穿井系數以及泄洪洞弧形門處的水壓力。Abstract : with the aids of computer ' s hardware, executive mechanism of weld arc length automatic controller of all - position pipe welder and additional software, an automatic system for arc striking has been developed, in which touch - starting method using tiny current is introduced. utilizing this method, the ablation ratio of tungsten electrode and tungsten inclusion ratio of welded seam is far smaller than normal touch - starting method. and the successful ratio of arc striking is high
文摘:用全位置自動焊管機弧長自動控制系統的計算機硬體和執行機構,僅增加部分程序,設計了採用小電流接觸引弧法的自動引弧系統,鎢極燒損和焊縫夾鎢遠小於普通的接觸引弧方式,引弧成功率很高。By testing the arc shield voltage in different vacuum degree, it proves that the arc shield voltage method will be an effective online testing method when the vacuum degree is or lower than lpa, but the method will be no use when the vacuum degree is higher than 10 - 2pa
通過對不同真空度下的真空滅弧室屏蔽罩電位的進行了測試,證實了用屏蔽罩電位法作為真空度在線監測的手段,對于真空度在1pa數量級上是可行的,但當真空度高於10 ~ ( - 2 ) pa時,此方法是不可行的。The main work and conclusion for this paper is as following : according to the flashover test results of several kinds of iced insulators under positive voltage and negative voltage, this paper obtained : for the single porcelain insulator, the single glass insulator and the composite insulator bridged completely by icicle, the metal cathode ' s strong ability of emission electron is the primary reason that results in the lower negative flashover voltage ; the position difference of the high resistance district in method anode side results in that porcelain insulator cluster and glass insulator cluster have an evident effect of polarity ; when less ice and no icicle at the brim of the sheds, due to numerous non - polar arcs on the composite surface, the effects of polarity of composite insulator was lost using the test method of the average flashover voltage in the freezing period, dc flashover performances were investigated of several insulators with some typical structures and different material
本文的主要工作和結論如下:在人工氣候室內,根據不同覆冰絕緣子正、負極性下的閃絡試驗結果,得出負極性電弧金屬陰極的強電子發射能力造成了單片瓷、玻璃絕緣子及被冰凌橋接的合成絕緣子有較低負極性冰閃電壓;正極性電弧金屬陽極側產生高電阻區所處位置的差異使得瓷和玻璃絕緣子串具有明顯的極性效應;覆冰較少時,合成絕緣子表面出現數量較多的非極性電弧使合成絕緣子無極性效應。利用覆冰期內平均閃絡電壓的試驗方法,對不同材質和結構的絕緣子在覆冰、低氣壓和污穢共存環境中的直流閃絡特性進行了研究。試驗結果表明,直流平均閃絡電壓隨著海拔的升高、覆冰量的增加以及污穢度的增加而降低,且其特徵指數與絕緣子結構、覆冰量、覆冰狀態、污穢度等有關。Avoid drawing any current from the wiper of a potentiometer. the resistance of the wiper contact will cause problems ( local heating, noise offsets etc
避免從電位器的弧刷處提取電流。弧刷的接觸阻抗會產生問題(局部溫升,噪聲偏移等等) 。In chapter two we study the transport properties of a curved quantum wire, such as the mixture of transverse modes, suppress of conductance, local density, abrupt change of transmission phase and so on. these properties is compared to those of a perfect quantum wire
第二章分析了弧形量子線的模式混合,電導抑制,局域態密度,透射相位突變等性質,並將這些性質與理想直量子線進行了對比。Abstract : the shaped technique of the electric arc tube s shell with neck, which is used in the small power metal - halide lamp, is introduced in this paper
摘要:超小功率高強度氣體放電燈電弧管電極極間距誤差要求小,二電極對中要求高,所以採用在電弧管泡殼兩端加縮頸來定位電極。There are arc - furnaces of all sizes, refiner furnace for casting steel in the forging workshops, and there are blast cupola and main frequency furnace for casting iron and copper
鑄鋼鑄造分廠有各種噸位大中小電弧爐鋼包外精煉爐鑄鐵,鑄銅有沖天爐工頻感應爐。So the development of self - energy sf6 cb is very important. in the paper, the math model of arc - quenching chamber air - pressure character is built on the base of 126kv / 31. 5ka self - energy sf6 cb ' s exploiting, then the theory analysis and calculation is deeply been done for cylinder radius, nozzle spout radius and opening position of moved contact that they have the essential effect for the use of arc energy in the course of opening. arc - quenching chamber parameter is confirmed according to the request of full opening and fault opening when the cb is opening
本文針對126kv31 . 5ka自能式sf _ 6斷路器的研製,建立了相應的滅弧室氣壓特性數學模型,對自能式sf _ 6斷路器開斷過程中電弧能量利用有重要影響的滅弧室缸徑、噴口直徑、動觸桿開口位置進行了詳細深入的理論分析和計算,並根據斷路器開斷中的滿容量開斷和近區故障開斷的要求確定了滅弧室參數。First, suppose a source point and a sink point. second, draw a unilateral line from source point to every substation node. the line ' s capacity is set as corresponding substation ' s allowable load value and the line cost is set as the substation ' s unit load cost
本文通過線性化處理后將網架優化模型描述為一個最小費用最大流問題,虛擬一個源點和一個匯點,從源點到各變電站節點各引一條單向弧,弧容量為變電站允許的負荷值,弧費用為變電站單位負荷的費用。Invented by indian - born unsw materials scientist, professor veena sahajwalla, the technology currently substitutes about 30 per cent of coke and coal in electric arc furnace ( eaf ) steelmaking with polyethylene waste plastic, which would otherwise have ended up in landfill
由(新南威爾士大學)的一位印度出生的材料學家? ?維娜?沙哈瓦拉發明的這項技術,可以通過使用那些原本將要堆在垃圾堆里的廢棄聚乙烯塑料,從而節約電弧爐煉鋼生產的大約30 %煤炭消耗。General principles for activities of nervous ; synapse and synaptic transmission ; the basic process of classical synaptic transmission ; postsynaptic potential : excitatory postsynaptic potential and inhibitory postsynaptic potential ; the conception of transmitter and receptor : mostly transmitter and receptor system ; reflex and reflex arc ; the characters of central excitatory transmission, central inhibition ; the motor unit of skeleton muscle ; stretch reflex ; the function of autonomic nervous system and their chemistry transmission
神經元活動的一般規律;突觸與突觸傳遞;經典突觸傳遞的基本過程;突觸后電位:興奮性突觸后電位,抑制性突觸后電位;遞質和受體的概念:主要的遞質和受體系統;反射與反射弧;中樞興奮的傳播特徵,中樞抑制;骨骼肌的運動單位;牽張反射;自主神經系統的功能及其化學傳遞。Potential gradient in the arc column
弧柱電位梯度分享友人