conservation relation 中文意思是什麼

conservation relation 解釋
守恆定律
  • conservation : n. 1. 保存，維持（健康），保守；保護；保護森林[河道]（等）。2. 【物理學】守恆，不滅。adj. -al
  • relation : n 1 說話，敘述，報告；故事。2 關系，聯系；〈pl 〉（利害）關系，交情；〈pl 〉國際關系。3 親戚關系...
  1. Our approach differs from a recent theoretical paper that dealt with the possible conservation of the combined spin and orbital angular momentum in relation to the susceptibility of the down - conversion crystal

    我們的方法與新近一些理論文章提出的方法是不一樣的，他們處理自旋角動量和軌道角動量可能的守恆當中涉及到了下轉換晶體的磁化系數。
  2. In this paper, high - order accurate weighted essentially non - oscillatory ( weno ) schemes are investigated and their applications in hyperbolic conservation laws are discussed. based on this, a new weno difference scheme which based on dispersion - relation - preserving relation is developed, and representative test cases with this scheme for computational aeroacoustics ( caa ) problems has been implemented and compared in order to test capability of wave capturing ; in addition, weno schemes generally do not converge at high order in the presence of contact discontinuity of euler equations, so a conservative front tracking technique coupling weno schemes and level set method to simulate the translating density profile is presented here, and numerical simulation with this technique for representative test case has been implemented and results show the desired accuracy

    本文研究了高階精度加權基本無振蕩（ weno ）格式及其在雙曲守恆律方程中的應用，在此基礎上作了兩個方面的工作：一是針對高頻聲波問題構造出一種基於保色散關系（ drp ）的weno有限差分格式，並對計算氣動聲學（ caa ）問題的代表性算例進行了大量數值實驗，比較了該格式捕捉波數的能力；另外，針對高階weno格式在處理euler方程的接觸間斷時精度有所降低的問題，研究了利用界面追蹤技術levelset方法和高階激波捕捉weno格式相結合的一種守恆追蹤方法，並且給出有代表性的密度滑移面問題的算例，得到一致高階精度的數值模擬結果。
  3. The model of rice ecological balanced fertilization is based on the conservation of mass and the relation of transmuting of the availability nutrition, the balanced fertilization is the best combination of fertilizer input which can meet the needs of high quantity, low investment, none - pollution, and so on

    生態平衡施肥模型是建立在質量守恆定律和有效養分轉化關系的基礎上，生態型肥料是同時滿足高產、低投、沒有污染等多目標的最佳肥料投入組合。
  4. Relation of wetland resource restoration and protection countermeasure of national conservation area of yellow river in northern henan province

    淺析豫北黃河故道國家級保護區濕地資源恢復與保護對策
  5. The malthuses " theory of absolutely rare resources david li jiatu ' s relatively rare theory about resources, john mu le ' s " economic theory of the static behavior " observes the relation questions of economy and resource mainly ; george ma shi set up the theory of conservation of nature which becomes the thought source of the modern conservation of nature movement

    馬爾薩斯的資源「絕對稀缺論」 、大衛?李嘉圖的「相對稀缺論」 ，約翰?穆勒的「靜態經濟論」 ，主要考察經濟與資源的關系問題；喬治?馬什創立自然保護學說，成為現代自然保護運動的思想源泉。
  6. ( 2 ) on the basis of continuity equation, momentum conservation equation, energy conservation equation, and substantial equation, coupled thm governing equations are derivated with giving up the assumption of local thermal equilibrium, adopting thermal elasto - plastic constitutive relation, taking the effect of temperature gradient on groundwater seepage ( analogous to soret diffusion ) and the effect of viscous dissipation of groundwater on temperature field of rock mass into account

    （ 2 ）根據連續性方程、線動量平衡方程和能量守恆方程以及相應的物性方程推導了飽和巖體溫度場-滲流場-變形場三場耦合作用控制方程組。在推導控制方程組時舍棄了「局部熱平衡」假設，採用了熱彈塑性本構關系，考慮了溫度梯度對地下水滲流的影響（類soret效應）以及地下水的粘性耗散對巖體溫度場的影響。
  7. On the basis of analyzing factor ( soil particle composition, soil bulk density, water stable aggregate content, antecedent soil moisture, slope gradient, rain intensity, accumulation depth and soil crust, soil and water conservation tillage measures ) affecting soil infiltration rates, several relation models was obtained ; analyzed in detail different soil and water conservation tillage measures intensifying infiltration rates, while there have the same rainfall condition, the increasing infiltration rates of contour tillage and artificial digging and artificial hoeing in gully areas of loess plateau are 67 % and 41 % and 29 % ; the increasing infiltration rates in hilly areas of loess plateau is 45 % and 22 % and 14 %

    在相同的降雨條件下，黃土高原溝壑區等高耕作與直線坡相比，可提高入滲67 ，人工掏挖可提高入滲41 ，人工鋤耕可提高入滲29 ；黃土丘陵溝壑區等高耕作可提高入滲45 ，人工掏挖可提高入滲22 ，人工鋤耕可提高入滲14 。並根據黃土高原超滲產流的概念和水量平衡方程，建立了不同水土保持耕作措施強化入滲速率模型。
  8. The relationship of plant species diversity to ecosystem function in relation to soil conservation in semi - humid evergreen forests, yunnan province, china

    植物多樣性與生態系統土壤保持功能關系及其生態學意義
  9. The government published in the gazette today ( january 5 ) six amendment regulations to revise a number of fees and charges for services provided by the agriculture, fisheries and conservation department ( afcd ) in relation to the control of animals and plants and the registration of veterinary surgeons

    二一年一月五日（星期五）政府今日（一月五日）于憲報刊登修訂規例，調整由漁農自然護理署（漁護署）所提供六項有關動植物管制及獸醫注冊服務的費用。
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