熔化極 的英文怎麼說
中文拼音 [rónghuàjí]
熔化極
英文
consumable electrode-
Consumable electrode melting technique
自耗電極熔化技術As to the high - density polyethylene, two strategies were performed : ( 1 ) after being modified by grafting polar groups on its backbone, polyethylene and organic montmorillonite were melt mixed directly, which could obtain the polyethylene / montmorillonite nanocomposites. the effect of groups grafted on the backbone on the efficiency of intercalation was investigated in this paper ; ( 2 ) choosing the grafters obtained in this experiment as the compatilizers, polyethylene / montmorillonite nanocomposites had also been prepared by melt mixing the polyethylene, grafter and organic montmorillonite. the difference of grafters and sequence of mixing on the intercalation result had also been analyzed
對于高密度聚乙烯,採用以下兩種思路進行: ( 1 )對聚乙烯首先進行功能化改性,使聚乙烯分子鏈上接枝上不同的極性基團,將改性后的聚乙烯再同有機蒙脫土直接熔融復合,成功的制備了聚乙烯蒙脫土納米復合材料,並考察了接枝到聚乙烯主鏈上基團的不同對最終插層效果的影響; ( 2 )選用制得的接枝物作為相容劑,將聚乙烯,接枝物,有機蒙脫土三者熔融復合,也可以得到聚乙烯蒙脫土納米復合材料,並對選用不同的接枝物作為相容劑以及復合順序對最終插層效果的影響加以分析。Metal argon arc welding of red copper and low carbon steel
紫銅與低碳鋼的熔化極氬弧焊Ultramafic rock fragments, which almost is altered to ophite, distributed in structural zone and displayed structural lens. so far, 9 fragments were discovered and mapped in nujinshan and bujing area ultramafic rock can be divided two kinds according to it ' s geochemical characteristics. one can be correlated with metaperidotite, which represented residual part that primary pyrolite underwent moderate partial melting, from some representative ophiolite melange in the world
按超鎂鐵巖類的地球化學特徵可將其劃分為兩類:一類具有較高而穩定的mgo 、較低的al _ 2o _ 3 、極低的cao , m f值為8 . 0 ? 8 . 4 ,按標準礦物組合進行分類可定為方輝橄欖巖,且均為fa _ ( 100 ) 、 en _ ( 100 )的鎂質端元組分;可與世界上一些典型的蛇綠巖套中變質橄欖巖進行對比,代表了原始地幔中等部分熔融作用后殘余物。Is a hard, brittle, corrosion - resistant, gray to white metallic element extracted from wolframite, scheelite, and other minerals, having the highest melting point and lowest vapor pressure of any metal
顏色呈灰色或棕黑色,硬度高,延性強,熔點極高,常溫下不受空氣侵蝕主要用途是製造燈絲和高速切削合金鋼,各種鎢電極,也用於光學儀器,化學儀器方面。Standard specification for refractory silicide sputtering targets for microelectronic applications
微電子設備用耐熔硅化物濺射電極Although there was a partial melting of the reactor core at tmi - 2, the radiological release was mainly confined within the containment building and the release to the environment is minimal and insignificant
雖然三哩島反應堆部分堆芯已經熔化,但輻射泄漏的范圍主要局限於安全殼廠房內,對環境的影響極其輕微。Events are in process or have occurred which lead to actual or projected damage to the reactor core, or resulted in core melting, and potential loss of containment integrity
事故正在進展或已經發生,堆芯即將或已經受到極大損壞,甚至熔化,同時安全殼的完整性亦可能喪失。Solder bar is made from high purity metal. by means of strict qualitg control the oxide and metallic and non - metallic impnrities and effectively minimized, the available high purity solder bar is with uniform and glazed surface good wetting and spreading ability after molten bright joint and minimum oxide residue after soldering. our product is suitable for wave and handwork soldering with high quality requirement
本公司生產焊錫條採用高純度金屬原料,在嚴格品管條件下,有效控制氧化程度以及金屬和非金屬雜質含量,焊錫條表面均勻光滑,純度極高,熔化后流動性好,潤濕性極佳,焊點光亮,氧化渣物極少發生,適用於高品質要求的各種波峰焊和手工焊。However, the disadvantage of laser welding is the so - called post - weld - shift ( pws ). the end result is a reduction in light coupling efficiency. the shrinkage force generated by the solidification process is so great that no known mechanical structure can counteract the shrinkage from shifting the joint ? at least at the micron level
這種封裝技術最大的缺點是會使激光二極體的封裝產生焊後偏移( pws ) ,很少有一種機械的方法可以校正這種焊後偏移到亞微米級別,目前激光錘被證明是一種很有效的校正方法,激光錘校正作用過程就是利用金屬熔化凝固冷卻產生的內應力來恢復焊後偏移的過程。Gmaw short - arc tack welds shall not be incorporated into the root pass
熔化極氣體保護焊-短弧點焊焊縫不能與根部焊道合成一體。This year, there was documented evidence of significant melting at both poles
今年,已有文字證明兩極有明顯熔化。The gmaw short - arc process shall not be used for welding socket welds or the root pass of o - lets and branch connections
熔化極氣體保護焊-短弧工藝不適用於承插焊接或出口和分支連接的根部焊道。Due to two work states - - - arc burning and short current - - - existed in welding process of consumable electrode welding, and different control objectives in these two states, two close - loop feedbacks are designed in the control system : welding voltage feedback and welding current change rate feedback
根據熔化極co2焊機具有燃弧和短路兩種工作狀態,且兩種狀態下控制目標不同的特點,在控制系統中設計了雙閉環反饋:焊接電壓反饋及焊接電流變化率di / dt反饋。The dcep mig has the characteristic of deeper penetration which can reduce defective fusion and good arc stabilization. the dcen mig has the characteristic of shallow penetration of welding seam, and the welding wire has a high melting speed. so the variable polarity pulsed mig is a new technology for the welding of aluminium alloy sheet
變極性脈沖mig焊是一種新的焊接工藝方法,其綜合了dcep脈沖mig焊熔深較大、可以減少焊縫的熔合不良、電弧穩定性好和dcenmig焊焊縫熔深淺、焊絲熔化速度較快的特點,減小了焊縫的熔深,增加了焊絲的熔化速度,是一種適合於薄板鋁合金焊接的新方法。We calculate the stress fracture limit, critical index limit and melting limit in a high power double clad fiber laser. the results show that the average output power decreases when the temperature is too high. to maintain the pumping efficiency and the output power, some cooling methods should be used when the output power reaches a certain level
給出了熱效應對雙包層光纖激光器影響的裂解極限、臨界折射率極限和熔化極限與光纖結構參數和泵浦功率的表達式,理論分析和數值模擬結果表明對于高功率的雙包層光纖激光器溫度很高時激光增益下降,在一定的功率水平上需要進行外界的冷卻,以保證泵浦激光的效率和高功率的激光輸出。The microcrystalline was same to the direction of electric field. the microcrystalline orientation of the film that was obtained by melting pvdf congealing in the effect of electric field changed along electric field obviously. comparing with the film congealing without electric field their crystalline plate become thick
發現pvdf纖維在電場作用下微觀結構變化較大,極化后微晶取向發生較大變化,極化以後微晶變化為沿電場方向取向的厚片狀,熔融態的pvdf在電場作用下凝固時變化更明顯,與不加電場直接凝固的pvdf膜相比,在電場作用下幾乎所有的分子鏈都沿電場方向取向所以出現有序的片晶結構,而且結構緻密。Specification for approval testing of welders when welding procedure approval is not required - tig or mig welding of aluminium and its alloys
不要求批準焊接工藝時焊工的鑒定考試規范.第2部分:鋁及鋁合金鎢極惰性氣體保護電弧焊或熔化極惰性氣體保護電弧焊In this thesis, a set of control system is developed for igbt inverter power supply of consumable - electrode co2 shielded arc - welding machine
本文為熔化極co2保護的igbt逆變半自動弧焊機電源研製了一套控制系統。Pole shifts are a cataclysmic inversion of the planet ' s axis of rotation, up to 180 degrees ; a sudden slippage of the planet ' s solid crust around the molten core
磁極轉換是行星旋轉軸的大變動倒置,等於180度翻轉;在熔化的地核周圍行星固體外殼突然意外的滑移。分享友人