instability n. 动摇性,不稳定性;不坚决,反复无常,三心二意。 the instability of human affairs 人事沧桑。
dynamic adj. 1.动力的,动力学的;力学(上)的;动(态)的;起动的。 2.有力的,有生气的;能动的;(工作)效率高的。 3.【音乐】力度;强弱法的。 4.【医学】机能(上)的。 5.【哲学】动力论的,力本论的。 a dynamic personality 活跃的性格。 a dynamic atmosphere 生气勃勃的景象。 a dynamic population 动态人口。 n. 〔限指 dynamic〕 (原)动力;动态。 adv. -ally
Through the frequency spectrum analysis of earthquake waves and the dynamic instability regions analysis , the dynamic stability of serial system can be judged under a certain earthquake wave 通过地震波的频谱分析,结合体系的动力失稳区间分析,可判断在某竖向地震作用下,串联体系并无发生失稳的可能。
As the wing - pivot frequency decreases , it couples with the vehicle short - period mode resulting in dynamic instability . a similar instability sometimes occurs when the pivot mode couples with the fuselage - bending mode 随其频率降低,它与飞行器短周期模态耦合时会导致飞行器动不稳定,而与机身弯曲模态耦合时同样会导致模型动不稳定性。
In the development course of informal employment in china , there are such problems as dynamic instability , uni - polarization , sub - standard operational mechanism and forms in labor relations , and low level of union organization 中国非正规就业发展过程中存在着劳动关系动态入稳定、劳动关系单极化、劳动关系运行机制和形式不规范、工会组织化程度低等问题。
During the procedure , the airspeed continues accelerating ( or decreasing ) and the aircraft configuration is rapidly changing . the aerodynamic interactions are complex and lead to dynamic instabilities . the shift between helicopter and airplane flight modes necessitates a change in control strategy 过渡模式下,飞机速度不断增加(或减小) ,气动布局不断改变,飞机动力稳定性差且气动干扰严重,直升机控制和固定翼控制切换,因此过渡模式动力学特性和控制系统研究是整个倾转旋翼飞机研制的主要难点。