shift of potential 中文意思是什麼
shift of potential
解釋
電位轉移-
Presence of vulcan xc - 72 active carbon powder in the pt / moox / gc composite electrode by electrochemical codeposition made peak potential of methanol oxidation a further negative shift of about 50mv and a further promotion of co - tolerant performance for methanol oxidation
催化劑中vulcanxc - 72活性碳粉的引入即共沉積制備的pt moo _ x c gc電極催化劑甲醇氧化峰電位又進一步負移50mv左右，抗co中毒催化性能又進一步提高。 -
A day kayaking that river revealed disappointingly little in the way of potential ivory - bill habitat, so his team decided to shift to the choctawhatchee
在象牙喙啄木鳥的可能棲息地漂流一天後的結果只有失望.於是他們決定改道查克托哈奇河 -
The results supported coke ' s belief that fizzy drinks continue to offer long - term growth potential in spite of the shift towards healthier non - carbonated beverages in many developed countries
良好的業績支持了可口可樂的預期，即：盡管很多發達國家都開始提倡更為健康的非碳酸飲料，但碳酸飲料依然具有長期增長潛力。 -
The potential energy surface scan tells us that the lithium into or out of the graphene layers is the charge - discharge process of li - ion secondary batteries which concurs with the continuous charge transfer between lithium and the graphite layers which synchronizes with the shift of the graphite layer stacking sequences between the abab type and the relatively stable aaaa type
計算結果顯示，鋰離子嵌入碳層的過程中同時伴隨著鋰和石墨間發生電荷連續轉移，同時石墨碳層堆積方式由aaaa型變為abab型，二者協同進行，最終嵌鋰石墨相對于鋰在石墨表面體系較穩定。 -
It is the main purpose of this paper to calculate the energy splitting of ground state and excited states induced by thermally assisted quantum tunneling. first, a brief introduction is given for the theoretical and experimental studies on the magnetic macroscopic quantum effects. then, spin tunneling in a uniaxial ferromagnetic particle in transverse magnetic field is converted to a pseudoparticle moving in effective double - well potential with the help of the effective potential description of quantum spin systems developed by ulyanov and zaslavskii. finally using the periodic instanton method we evaluate the transition amplitude, energy shift and prefactor of wkb exponential and the energy splitting of ground state and the tunneling rate for excited states induced by thermally assisted quantum tunneling are obtained
文章首先對磁性宏觀量子效應的理論和實驗方面作了簡單介紹，然後藉助于ulyanov和zaslavskii發展的一種等效勢描述方法，把外磁場沿難磁化軸方向時的自旋隧穿約化成在等效雙勢阱中運動的粒子，利用瞬子方法給出基態能級劈裂，最後利用周期瞬子方法分別計算了隧穿幅、能級移動以及wkb前因子，從而給出由於熱助量子隧穿引起的激發態的隧穿率。 -
The first is the shift from traditional pachinko, which resembles a vertical form of pinball, to more modern pachislot machines, which can incorporate high - tech graphics, slot - machine features and larger potential payouts based on " accumulating jackpots "
第一就是從傳統破青哥的轉變，不再像一個立起來的彈珠臺一樣，對于許多現代的柏青嫂機臺來說，它們可以融入高科技的圖像，賭博機的特徵和更大額的基於累計賭注的返還彩金。 -
But when they come across an area of interest ? such as potential food ? they always shift the star so that a single pair of appendages can carry out more detailed investigations
一旦碰上?們有興趣的地方，例如可能有食物， ?們就會調整星鼻的位置，讓其中一對附器進行比較詳細的探查。 -
Firstly, this paper introduces the asynchronous motor model, and compares it with the dc motor ’ s. then the paper studies the principle of vector control, and proposes an improved current model of rotor flux observer. this paper also studies the three - level inverter ’ s topology, working principle, the neutral - potential unbalance mechanism and its controlling strategy. the paper especially studies the svpwm in details. the interface between the vector control and the three - level inverter is studied in details, including the generation of reference voltage vector, its judging of the sector and triangular regions, and the working mechanism after it sent into three - level inverter. when synthesizing the reference voltage vector, select the vector which only includes p and o states as the starting vector, thus eliminate the vector shift problem when sector changes. this paper fully takes advantages of the powerful functions of matlab / simulink to set up the simulation model. this construction is very explicit. the simulation results verify the inverter voltage output is correct, the rotor flux is steady, the asynchronous motor ’ s dynamic and steady state performances and speed modulation are excellent
本文首先介紹了異步電機的數學模型，在此基礎上將異步電機的數學模型與直流電機的數學模型進行了比較;然後介紹了矢量控制的基本原理，採用了一種改進的轉子磁鏈電流型觀測模型;對三電平逆變器的電路拓撲、工作原理、中點電位不平衡的機理及控制方法進行了介紹，詳細分析了空間矢量脈寬調制策略。本文對異步電機的矢量控制與三電平逆變器之間的介面進行了詳細的研究，包括:參考電壓矢量的形成、所落扇區與具體小三角形區域的判斷、送入逆變器之後的工作機理。在參考電壓矢量的合成時，選擇只包含p 、 o狀態的空間電壓矢量作為起始矢量，解決了扇區切換時的矢量突變問題。 -
The result showed that in the future climate change scenarios ( temperature increasing and precipitation unchanging ), the interlock area of farming - pastoral region will shift from the northwest to southeast, and the climate potential productivity will decrease
研究結果表明，在降水不變，溫度升高的情況下，現有的農牧交錯帶將東南移，范圍擴大；同時氣候生產力可能下降。
分享友人