hydrodynamic derivatives 中文意思是什麼

hydrodynamic derivatives 解釋
水動力導數（包括位置導數和旋轉導數）
  1. During the processing system development, firstly, set forth the methods, importance and two recently formulas of hydrodynamic derivatives. secondly, based on the mmg module the maneuvering motion equations are established for the ship in still and deep water. to compile and run the program, the calculation results compared with the experimental data

    本論文首先簡述了獲得水動力導數的方法、重要性和兩種新的估演算法，接著運用mmg分離型船舶運動數學模型，建立了深水、靜水域的船舶操縱運動方程，並編制計算程序，將試驗結果同數值計算結果相比較，獲得較為滿意的結果。
  2. As an example, the hydrodynamic derivatives of a slender - body of revolution are calculated

    作為例子，本文用數值方法計算了細長回轉體的水動力導數，給出了結果。
  3. So, it is main problem that set up mathematic model for ship motion simulation. however, the calculating definition of maneuverability motion depends on the hydrodynamic derivatives. for this reason, the purpose of this article is : apply newly hydrodynamic derivatives formula to calculate hydrodynamic forces and offer the ship maneuverability index during the design stages

    因此，本文的研究目的是：運用最近提出的水動力導數近似估算公式，獲得較為精確的水動力計算，為船舶工程人員在船舶初始設計階段提供使用工具，使他們在設計時就能較準確地獲得實船操縱性能指標。
  4. The most important and difficult work in ship maneuvering simulation and prediction is to accurately estimate its hydrodynamic derivatives

    因此，非常需要引入新的研究工具和高效的研究方法。
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