銅損 的英文怎麼說
中文拼音 [tóngsǔn]
銅損
英文
copper loss-
Superconductivity - part 8 : ac loss measurements - total ac loss measurement of cu nb to composite superconducting wires exposed to a transverse alternating magnetic field by a pickup coil method
超導性.第8部分:交流電損耗測量.用拾波線圈法測量暴露于橫向交流磁場的銅鈮復合超導導線的交流電總損耗量The isozyme patterns of spermary and heart is same to hepatopancreas, not show a specificity dominance isozyme patterns, spermary exist dominance isozyme patterns at 0. 29 of rf value, the heart exist dominance isozyme patterns at 0. 32 of rf value
結果表明:銅、鎘聯合作用10d后各細胞器均表現出受損現象,其中細胞核與線粒體均表現出形態上的改變,肌纖維則受損相對較輕。Based on the maxwell ' s equations, the one - dimensional foil conductor ' s current density distribution equals the sum of the independent skin effect and the proximity effect current density distributions, and the one - dimensional foil conductor ' s loss equals the sum of the independent skin effect and the proximity effect losses
本文從maxwell電磁場方程出發對一層薄銅箔的趨膚和鄰近損耗進行了研究,得出銅箔的總損耗是趨膚和鄰近效應單獨起作用產生的損耗的和。We also studied the dynamic characteristics of cf / cu ( c ) - cu composites, the results show that, by the method of graphite is coated with copper, the coefficient of friction and the wear rates remarkably decreased. with the increase of the copper coated carbon fiber content, the wear rates of cf / cu ( c ) - cu composites is notably decreased, while the coefficient of friction is increased. with the increase of electric current density, the wear rate of cf / cu ( c ) - cu composites is increased
研究發現,碳纖維鍍銅石墨-銅復合材料的電摩擦磨損性能與碳纖維含量存在一最佳值,當碳纖維含量為0 . 6時,其電摩擦磨損性能最好;對于不同電流密度下的電磨損性能的比較可以發現,通電磨損時的電摩擦系數要小於機械磨損時的摩擦系數,碳纖維鍍銅石墨-銅復合材料的電摩擦系數隨電流密度增大先減小而後增大,在電流密度為15a cm ~ 2時達到最小值;通電磨損量要遠大於機械磨損量,且隨著電流密度增大,磨損量增加。When there are rich cu defect in cuw / crcu integrated contact, the arc eroding loss of the contact is first from the spraying of cu, then the w skeleton flake off
( 4 )在觸頭存在富銅缺陷時,燒損首先產生的是噴濺,接下來是鎢骨架的大面積燒損。Also, a new type of prism is designed as folding mirror substituting for the plane mirror, in order to enhance the reflectivity
提出一種基於布氏窗原理的新型低損耗轉折棱鏡的設計方案,以期替代目前使用的平面鍍金銅鏡以提高反射效率。Friction and wear behavior of bronze cu pair in the presence of electric current
純銅摩擦副摩擦磨損性能研究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,有利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用較少的試驗次數找出配方與摩擦性能間的關系,擬合曲線基本能表示各配方的摩擦系數發展趨勢;配方中不加銅粉或不加石墨,其摩擦系數均較高,說明銅粉和石墨應該配合使用;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,摩擦系數均具有較低值;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,在金屬表面均可形成潤滑轉移膜,從而減少金屬摩擦副表面間的直接接觸,大大延長其使用壽命;轉移膜中主要含有較多的石墨、少量聚四氟乙烯、 moo 。The common method of enhancing the efficiency is given, such as decreasing the iron loss, copper loss and machine loss
從降低電機的鐵耗、銅耗和機械損耗著手,給出了提高電機效率的一般方法。In order to implement an energy - saving method which keeps iron loss equal to copper loss using variable - voltage in light load, induction motor parameter identification at any moment is a key problem
對于輕載調壓使銅損等於鐵損的這一節能方法而言,在線辨識出電機的參數是一個關鍵點。This paper studies the variable - voltage energy saving theory and its implementation for asynchronous motor with light load, compares several kinds of scheme of improving efficiency in detail and confirms the variable - voltage energy saving method, that is adjusting the input voltage by detecting the iron loss and copper loss of motor directly. in addition, the directness *, simpleness and availability of the method are verified by the emulational experimental results with simulink of the matlab. the circuit of the general inverter based on the tms320f240 dsp was used in this paper, and the practicable program was compiled
本文分析了異步電動機輕載時降壓節能運行的原理,對幾種提高效率的方案進行了比較,確定了通過直接檢測電動機鐵損和銅損來實時調節輸入電壓以達到高效節能目的的控制方法,應用matlab軟體對系統進行模擬,在基於tms320f240dsp的通用型變頻器上編制了實用化的程序,形成了完整的樣機,對其進行了測試,並給出了試驗結果。At the same length, the insertion loss of different sub - channels also undergoes changes. this effect, along with the intrinsic background noise, impulse noise and the receiving sensitivity of modem on the adsl, will limit the maximum transmission distance on one single subscriber line
首先,銅線的插入損耗將隨著線路距離的增加而成比例地增加,並且在同一距離下各子通道的插入損耗也發生變化,這個因素和線路固有的背景噪聲、脈沖噪聲、數據機的接收靈敏度一起將限制在單用戶線上adsl所能夠傳輸的最大距離。The removal of the iron teeth in the armature leaves more room for armature copper, which lowers the losses and improves machine efficiency
在電樞中去除鐵刷將會給銅電樞留下更多的空間,從而降低損耗,提高機械效率。In this paper, nanosized al2o3 ceramic particles were chose as reinforcing phase. enhanced with ultrasonic wave the particles were covered with copper using method by electroless plating, the copper - matrix composite was developed by hot - press sintering process of the composite powder. the composition, microstructure, hardness, density and dry sliding wear property of the new material have been studied
研究路線為:選用納米級al _ 2o _ 3陶瓷顆粒作為增強相,在超聲波的環境中用化學鍍的方法完成對納米al _ 2o _ 3陶瓷顆粒表面的金屬銅包覆,採用熱壓燒結成型技術以復合粉末為原料制備成納米al _ 2o _ 3陶瓷顆粒增強銅基復合材料,研究分析復合材料的成分、組織結構、硬度以及緻密度,對試樣進行了干滑動摩擦磨損實驗。If coreless melting furnace mainly for steel , alloy steel , cast iron , and other ferrous metal materials and stainless steel , copper , aluminum , zinc and other non - ferrous metal materials melting , melting with high efficiency , energy - saving , metal components uniform , burning less temperature or block , simple operation , easy to supporting the advantages of production lines
中頻無芯熔煉爐主要用於鋼、合金鋼、鑄鐵等黑色金屬材料以及不銹鋼、銅、鋁、鋅等有色金屬材料的熔煉,具有融化效率高、節電、金屬成分均勻、燒損少、溫升塊、操作簡單、易於配套生產線等優點。Copper - nanosized tibi composites were prepared by in - situ process. the microstructure, mechanical and electrical properties, and dry sliding wear behavior and electric sliding wear of cu - nanosized tib _ 2 in - situ composites was investigated ; mostly task as follows : the thermodynamic data for the reactions between b and ti in the molten liquid of copper were analyzed, the copper matrix composites reinforced by in - situ tibi nanoparticles were prepared by reactions of 8263, carbon and titanium in copper - titanium melt, and copper - titanium, copper - boron in alloy melt, respectively, which controlled the reaction temperature, reaction time and solidification process. the rnicrostructure and mechanical and electrical properties of the in - situ composites were investigated by using optics microscope, tem and xrd
本文採用原位反應法制備了cu -納米tib _ 2原位復合材料,在此基礎上分析了原位復合材料的微結構,進行了干滑動摩擦磨損和電接觸滑動磨損實驗,完成的主要工作如下:從熱力學的角度出發,分析了陶瓷tib _ 2顆粒在銅基體中原位生成的熱力學條件,並用電解銅、工業純鈦、 b _ 2o _ 3 、 c (還原劑)以及cu - ti 、 cu - b等合金為原料,通過控制適當的反應溫度、反應時間和快速凝固等工藝手段,制備了cu -納米tib2原位復合材料。Production practice of lowering ore dilution loss at chengmenshan copper mine
城門山銅礦降低貧化損失的生產實踐The wearing resistance, microstructure, worn surface morphology and hardness change in wearing end - face and non - wearing end - face of cr - mn - cu alloy white cast iron were tested and analyzed
摘要對鉻錳銅合金白口鑄鐵的耐磨性、無磨損端面及磨損端面的微觀組織、磨損形貌及硬度進行了試驗和分析。The tip is damaged heavily, and the hole close to tan should have copper lacked
刃尖磨損較重,靠鐔處那個孔應該是缺了銅。Armature copper loss
電樞繞組銅損分享友人