variation n. 1.变化,变动。 2.变量,变度,偏差。 3.【语言】语尾变化;变体,异体;【数学】变分,协变;顺列;【生物学】变异,演变,变种;【音乐】变奏曲;【天文学】变差;(月的)二均差;【物理学】磁差。 a principle without variation 不变的方针[原则]。 be capable of variation 可能变化。 be liable to variation 容易变化。 These prices are subject to variation. 上列价格可能变更。 adj. -al
In this paper , the author analyses various form factors and shapes of a few hullform alternatives of a 2000 teu container , by use of the methods of experience , design charts , to estimate their performance ; adopting numerical methods to calculate their drag and effective horse power , studies the principal effects of both form - factor variations and hull shape change on their hydrodynamic performance , and other problems to be noticed in ship remoulding 本文主要通过对2000箱集装箱船的几个变形船型的主要参数和形状进行分析,采用经验法和图谱方法对各变形船型作性能估算分析,并用数值方法计算各船型的阻力性能,初步探讨船型参数、形状改变对性能影响的主要方面,研究改型时应注意的问题。