電勢梯度 的英文怎麼說

中文拼音 [diànshì]
電勢梯度 英文
electric potential gradient
  • : Ⅰ名詞1 (有電荷存在和電荷變化的現象) electricity 2 (電報) telegram; cable Ⅱ動詞1 (觸電) give...
  • : 名詞1 (勢力) power; force; influence 2 (一切事物力量表現出來的趨向) momentum; tendency 3 (自...
  • : Ⅰ名詞1 (梯子; 樓梯) ladder; stairs; steps; staircase 2 (姓氏) a surname Ⅱ形容詞(形狀像樓梯的...
  • : 度動詞[書面語] (推測; 估計) surmise; estimate
  1. Secondly, the effects of the crest width of the back - emf waveform to the torque ripple in the 120 ? conduction mode are analyzed, among which the effects of the advance commutation angle to the torque ripple are quantificationally analyzed for the bldcm drives whose back - emf waveform crest width is less than 120 ?,

    其次分析了120導通方式下反平頂寬對轉矩脈動的影響,對于平頂寬小於120角的非理想形波反,定量分析了換相超前角對換相轉矩脈動的影響。
  2. For the bldcm which has a general crest width of the back - emf waveform, two kinds of torque ripple conditions when drived by sine - wave current as well as by square - wave current are deduced based on the mathematical models. in addition, a comparison is carried out between these two conditions, which indicates that sinusoidal current driving is more favorable to minimizing the torque ripple when the crest width of the back - emf waveform is less than a certain value

    闡述了抑制齒槽轉矩措施對反波形的影響,利用無刷直流機的數學模型推導並比較了任意平頂寬形波反在正弦波和矩形波兩種流驅動下的磁轉矩脈動情況,得出在形波平頂寬減小到一定數值后採用正弦流驅動更有利於減小磁轉矩脈動。
  3. An understanding of electrical emission of concrete may lead to hi practical application such as nondestructive testing of concrete. ( s ) according to nonequilibrium thermodynamics, a mathematical model on the relationship between strain gradient and electric potential gradient is presented

    ( 5 )依據非平衡態熱力學建立了混凝土中應變電勢梯度、應變此漢理卜人學附士學位論文場強等力關系的數學模型。
  4. This paper fully analyzed and discussed the progressive process of hydropower plant operation mode, the development process and trend of cscs ; simply introduced the regulations and demands of no operator on duty in hydropower plant ; analyzed all kinds of demand of cscs to implement no operator on duty ; in allusion to the running actualities of the operation management mode, analyzed the difficulties to implement no operator on duty in gehp ; put forward the reforming items for devices and equipment maintenance and demands of reforming of cscs to implement no operator on duty in gehp ; advanced a new concept and idea : " computer operator " and " computer operator director " ; and set up a new operation management mode - no operator on duty in gehp that is appropriate to three gorges cascade dispatch center ( tgcdc )

    本文全面分析論述了水廠運行值班方式進步的過程和計算機監控系統的發展及其趨;簡要介紹了水廠無人值班的規定和要求;分析了實行無人值班對計算機監控系統的各項要求;針對運行值班方式的現狀,分析了二江廠實現無人值班的難點;提出了實現無人值班需配套進行的設備改造項目和適應無人值班的設備維護管理模式;重點分析了二江廠實現無人值班對計算機監控系統改造的要求,提出了「腦值班員」和「腦值長」的概念和思路。建立了二江廠在三峽調聯合調模式下的無人值班管理新模式。
  5. The non - ideal bemf waveform of bldcm is often caused by two facts. one is that the platform width of bemf waveform is less than 120 ; the other is the cogging harmonics existed in the bemf waveform

    非理想反波形的無刷直流機有兩種情況,一種是反形波的平頂寬小於120 ;一種是由於磁場分佈受齒槽的影響,反存在齒諧波,使其波形發生畸變。
  6. To guarantee the validity and speediness insimulation, the back - emf is generated using piecewise linear curves. in the double loop of control system, a pi controller is adopted in the speed loop and a hysteresis current controller is adopted in the current loop

    為保證模擬快速性和有效性,模型採用分段線性法生成形波反,系統採用雙閉環控制:速環採用pi控制,流環採用滯環流控制。
  7. Possible geometrical structures and relative stability of semiconductor microclusters ganpn ( n = 1 - 5 ) are studied by using density functional calculations with generalized gradient approximation ( b3lyp ). for the most stable isomers of ganpn ( n = 1 - 4 ) clusters, the electronic structures, vibrational properties, dipole moments, polarizability and ionization potential are analyzed using hf, mp2, cisd and b3lyp methods with different basis sets

    修正的密泛函方法( b3lyp 6 - 31g )優化了ga _ np _ n ( n = 1 - 5 )團簇的可能幾何構型,計算了各穩定構型的的振動光譜,並用不同方法( hf 、 mp2 、 cisd等)研究了各穩定構型的子結構、、偶極矩和極化率等性質。
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