thermodynamic constant 中文意思是什麼

thermodynamic constant 解釋
熱力學常數
  • thermodynamic : adj. 熱力的。a thermodynamic cycle 熱力循環。n. -s 熱力學。
  • constant : adj 1 恆定不變的，固定的，穩定的，恆久的；繼續不斷的。2 不屈不撓的，堅韌的。3 忠實的，有節操的。n...
  1. Relaxor ferroelectric single crystals, such as pb ( mg1 / 3nb2 / 3 ) - pbtio3 ( abbreviated as pmnt ) or pb ( zn1 / 3nb2 / 3 ) - pbtio3 ( abbreviated as pznt ), have been reported to exhibit an extremely large piezoelectric constant and excellent electrostrictive properties. such excellent performance makes it fully substitute the traditional piezoelectric ceramics and points to a revolution in ultrasonic transducers, actuators and micro - positioners, making relaxor - based piezocrystals the most promising materials for a broad range of advanced applications. however, it is difficult to grow the high quality single crystals because of the lack of valid thermodynamic data

    新型弛豫鐵電單晶鈮鎂酸鉛（簡稱pmnt ）或鈮鋅酸鉛（簡稱pznt ）是一類新興的功能材料，其在準同型相界附近具有優于傳統壓電陶瓷的較高的壓電常數和電致伸縮系數，可完全代替傳統的壓電陶瓷作為超聲換能器、致動器、微位移器等，使其成為鐵電領域的研究熱點，但如何生長出滿足應用要求的單晶材料卻一直是一個困擾的問題。
  2. Ceramic fuel cells are electrochemical devices that directly convert fuels such as gasified coal or natural gas into electricity without the limitation of the carnot cycle ( an ideal thermodynamic cycle in which heat is taken onto a working fluid at a constant upper temperature and rejected at a constant lower temperature )

    陶瓷燃料電池是一種電氣化學裝置，能直接將煤氣、天然氣等燃料直接轉化為電能而不會受到卡諾循環（一種理想的熱力循環，熱量在恆定高溫下轉化成工作流體，在恆定低溫下被釋放）的限制。
  3. Thermodynamic couple numerical simulation of ring compression of pure aluminum and tube extrusion of superalloy gh4169 is done by adopting the constant friction model and the present friction model in the paper. numerical results are compared with experimental investigations to validate the correction and nicety of the present friction model of bulk metal forming processes. the accuracy of the finite element simulation of bulk forming processes can be improved by adopting the present friction model

    採用二次開發msc . superform軟體，對純鋁圓環鐓粗和高溫合金gh4169管材擠壓過程進行了熱力耦合數值模擬，比較了採用本文提出的多因素摩擦模型和常摩擦模型對圓環鐓粗和管材擠壓過程變形行為的影響，通過與實驗結果的比較，驗證了本文的摩擦模型及其參數值的正確性，也說明了多因素摩擦模型提高了有限元模擬的精度。
  4. Based on a steady heat transfer model with constant specific - heat fluids, a thermodynamic optimizing analysis, driven by two heat transfer forces, is conducted on the important parts of the cycles ? the heat exchangers

    在穩態定比熱換熱器模型的基礎上，對循環中的重要部件? ?諸換熱器進行了兩種傳熱推動力下和兩種溫度條件下的熱力學優化分析。
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