1) free-free modal test
自由-自由模态试验
2) free self-propulsion test
自由自航模试验
1.
Based on the model test using free self-propulsion test method, ship special maneuverabilities are researched adopting variable vector propeller and bow thruster.
本文以船模自由自航模试验为基础,对采用全方位推进器和首侧推器的船舶特殊操纵性能进行了试验研究,对其原地掉头、纯横移、斜移等操纵方式进行了探索和研究。
4) free modal
自由模态
1.
In the design process of the driving axle,it is difficult to determine the free modal of each parts and to avoid the "resonant zone" of the mechanical systems.
在驱动桥的设计过程中很难确定机构各部件之间的自由模态,机构的生产、应用往往出现机械系统本应避免的"共振区"。
2.
On the base of physics structure, the finite element model for flexible parts of a machine gun is established and the free modal analysis is accomplished by Nastran software.
利用有限元分析软件Nastran建立了某型机枪弹性部件的有限元模型,并对其进行了自由模态分析。
5) free mode
自由模态
1.
The free modes of the block were verified by testing.
利用Pro/E软件对6缸柴油机机体建立三维模型,然后再用Abaqus对机体进行自由模态的分析,得出了前22阶固有频率和振型。
6) free-free mode
自由-自由模态
补充资料：自由民局
见重建时期。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条