例句與造句

1. The calculated drafts covers the whole possible ship draft in the large amplitude motion ; secondly , the research creates and solves the ship large amplitude motion equations . on the one hand , the actual calculation takes into account the coupling between the different motion modes , on the other hand , in the process of calculation of the ship hydrodynamic coefficient , it considers the influence of the nonlinear factor . the hydrodynamic coefficient used in the calculation of froude - krylov force , diffraction force and radiation force changes instantaneously following the draft , and the hydrostatic buoyancy is computed very accurately for the instantaneous immerse hull
   本文的研究分為二個部分：首先利用frank源匯法計算水動力系數(shù)，計算包括不同吃水時的附加質(zhì)量和阻尼系數(shù)，吃水范圍涵蓋了船舶大幅度運動時所有可能的吃水；然后建立和求解船舶大幅度運動方程，在實際計算時一方面考慮了運動模態(tài)之間的耦合，另一方面在計算水動力時，考慮了非線性因素的影響。 froude - krylov力、輻射力、繞射力中的水動力系數(shù)隨吃水瞬時變化，靜浮力的計算精確到船體瞬時濕表面積，最后用四階龍格?庫塔方法在時域內(nèi)求解船舶運動方程，并進行了載荷計算。
2. On the basis of this analysis the radiation and diffraction forces of the ship are calculated using these three methods and compared . at the same time vertical ship motions in regular wave are solved by these three methods . the results are compared to test each method ' s availability and suitability , thus the theoretical basis of optimize design of sea - keeping performance is provided
   分別介紹了二維切片法、高速細長體理論和三維理論的基本原理，分析了三種不同方法各自的適用性，在此基礎(chǔ)上分別計算了船舶的輻射力和繞射力，比較了這三種方法的計算結(jié)果，為不同營運目的的船舶耐波性計算提供陜速有效而實用的計算方法；同時應(yīng)用三種方法計算了船舶在規(guī)則波中的垂向穩(wěn)態(tài)運動響應(yīng)，比較三種方法的計算結(jié)果，測試各種方法的有效性和適用性，為船舶耐波性的優(yōu)化設(shè)計提供原始的理論基礎(chǔ)； 2
3. It's difficult to find diffraction force in a sentence. 用diffraction force造句挺難的