vibration constant

Environmental test methods have high and low temperature test, impact test, temperature resistant and corrosion test, test, test, and dustproof sealing test, vibration test, impulse hammer and crash test, transport test, constant acceleration test, life test ( durability).

环境试验方法有高低温试验、温度冲击试验、耐潮及防腐试验、防霉试验、防尘试验、密封试验、振动试验、冲击和碰撞试验、运输试验、恒加速试验、寿命（耐久性）试验等。

The constant-gain negative velocity feedback, Lyapunov feedback as well as a linear quadratic regulator ( LQR) approach had been used for active vibration control with the beam subjected to impact excitations and/ or thermal loads.

采用常增益速度负反馈控制、Lyapunov反馈控制和基于独立模态的线性二次型调节器（LQR）设计主动控制器，实现了层梁结构脉冲激励和热载荷作用下的振动主动控制。

This article is on free vibration in mass-variable rotor of textile machine at constant velocity.

本文研究了具有定常转速的纺织机械变质量转子在不同支承下的非线性自由振动问题。

An adaptive phase shifting interferometry, insensitive to the disturbance of constant term of phase perturbations induced by environmental vibration and air turbulence is discussed.

研究对环境振动和空气扰动所造成的两相干光束间常数项光程变化不敏感的自适应移相干涉系统。

The dielectric constant, pyroelectric coefficient, thickness extension vibration electromechanical coupling factor and their temperature dependence are investigated.

研究了它们的介电常数，热电系数，厚度伸缩振动机电耦合系数及其温度依赖性。