negative beam 中文意思是什麼

negative beam 解釋
負電子束
  • negative : adj 1 否定的 否認的；拒絕的 （opp affirmative）； 反對的 反面的；消極的。2 （opp positive） 【電...
  • beam : n 1 梁，棟梁，桁條；（船的）橫梁。2 船幅；（動物、人的）體幅。3 （秤）桿，杠桿，（織機的）卷軸，...
  1. Numerical simulation of the beam optics characteristics in a high energy and high current negative ion beam system

    高能強流負離子束系統束光學特性的數值模擬
  2. These results indicate that the magnetic field should have upper stability when the particle beam is low polarized while the requirement of the stability of the magnetic field can be lowered when the particle beam is high polarized in the experiment of producing the polarization of the particle beam. and the complementariness can be used as a negative feedback to stabilize the polarization of particle

    這一結果表明，在產生離子束極化的實驗中，在離子束低度極化的前期階段，磁場應具有較高的穩定性，而在離子束極化度較高的後期階段，磁場的穩定性要求可以放鬆；自旋的縱向分量的無規漲落和橫向分量的無規漲落的互補性有可能用來做成穩定離子極化的負反饋。
  3. The elastic methods are beam - columns method, the pseudo load method, the pseudo lateral load method, the iterative gravity load method and the negative rigidity method

    常用彈性分析的方法有：樑柱法、虛擬荷載法、虛擬側向荷載法、迭代重力荷載法和負剛度法。
  4. ( 3 ) it is known that load effect is not consistent with the section resistance incommon section continuous composite beam. a kind of composite beam with itsrational section size is suggested, which is consist of the t shape concrete beam andsteel girder. this kind of composite beam not only has enough carrying capacity, almost has same positive and negative resistance moment, but can decrease theamount of the steel

    （ 3 ）分析可知連續組合梁的跨中、支座截面處荷載作用效應及截面抗力規律不匹配，本文提出了採用t形混凝土梁和工字鋼代替一般的混凝土板和工字鋼的組合梁截面形式，並給出了截面尺寸比例，能使正負截面抵抗矩接近，符合組合梁受力特徵，減少了材料用量，滿足承載力和剛度等要求。
  5. However, the cantilever beam ’ s concrete deck of this structure will be cracked easily at the negative moment region

    該結構懸臂挑梁根部混凝土板承受負彎矩，容易開裂。
  6. Negative mode velocity feedback was adopted and the control voltage applied to each piezoelectric element acting as actuator was calculated to control the vibration of the beam

    採用模態速度負反饋進行回饋控制，以此計算出各個作為致動器的壓電片的控制電壓，以抑制懸臂梁的振動。
  7. However, the stud welding roots in the negative moment region of the beam are often subjected to the joint action of shear stress cycling of the studs and tensile stress cycling of steel girder flanges

    但在負彎矩處栓釘焊趾往往承受栓釘剪應力循環和鋼梁翼緣拉應力循環的共同作用。
  8. Therefore, the scientific scholarsboth at home and abroad have been carried series of research work since the 1960s, with some defects still remaining unresolved. the objects of this research are : ( 1 ) to analyze the course of the crack, itsappearing and development, and discuss the major factors influencing the behavior ofthe negative moment region in continuous composite beam. ( 2 ) to establish the modeand formulas of the crack width by the theoretical analysis

    本文研究的主要目的是通過對組合梁負彎矩區裂縫的出現、發展的過程分析，討論影響鋼-混凝土連續組合梁負彎矩區受力性能的主要因素，建立了組合梁負彎矩區裂縫計算模式和裂縫寬度的計算公式，並初步探討了連續組合梁合理截面形式。
  9. For the cantilever beam, the theoretical stiffness and limited capacity are slightly less than the test ones if considering only the steel beam and the reinforced bars in the negative moment zone with the concrete in the tension zone ignored

    結果表明：簡支組合扁梁，忽略彈性中和軸以下受拉的混凝土的影響，採用等效換算截面方法計算所得的剛度和極限承載力與試驗結果比較吻合；懸臂梁只考慮混凝土板中配置的負彎矩鋼筋，忽略混凝土，計算所得的剛度和極限承載力比試驗結果略微偏小，但相差不大。
  10. Similarly, to position the beam below the boresight axis requires the use of a negative angle. this yields a negative and equation ( 7 - 4 ) again yields the applied phase of each element

    同樣的，要使波束低於視軸線要求負的角度。增量就是負的，式（ 7 - 4 ）仍可用於計算每個單元的增量。
  11. Therefore, by exerting controllable atomic array and quantum states, it is possible for physical realization of a quantum computer and the communication of quantum states. it is shown that a negative detuning of the laser field from the atomic resonance will lead to nonzero light pressure forces and reduce velocities along the laser beam axis

    研究結果表明，當選擇負失諧時，原子將受到來自激光場的阻滯力，在它的作用下，原子沿激光束方向的運動速度大大減小，溫度降低，表現為冷卻效應。
  12. Besides, compariative analysis was carried out on ductility and energy comsumption of the interior joints on the top story with 90 ? bent hooks, exterior joints in the intermediate stories with different detailing of longintudinal reinforcement in the columns, and the knee joints with different lap splices in the beam and the column under negative moments. seismic anchorage and lap splices schemes were presented for the longitudinal rebars in the joint core

    此外重點對不同條件下中間層端節點梁筋帶90彎折錨固端的試驗結果、頂層中節點採取不同柱筋構造方案的試驗結果以及樑柱負彎矩筋採取不同搭接方案的頂層端節點的試驗結果的延性和耗能性進行了對比分析。
  13. Exotic material is a hypothetical material that has negative gravitational force as seen by a light beam travelling through it

    當物質流入黑洞，會發射出強烈的x射線。找尋這些x射線源亦是尋找黑洞的重要方法。
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