Objective To observe the sound attenuation effect of several kinds of hearing protectors (earplugs and earmuffs) in an infrasound generator sound field.
目的观察几种护耳器（耳塞、耳罩）对次声发生器次声场的隔声效果。
Objective a simulated revelation table is designed to enable the students to be more intuitive grasp of the role and workflow of high voltage generator.
目的：为了使同学们能够更加直观的掌握高压发生器的作用以及工作流程而设计的一种模拟展示台。
Applying the design scheme, a nonlinear integrated control law with objective holographic feedbacks (NICOHF) was derived for the condensed steam generator.
运用这种设计方法，针对凝汽式发电机，提出了发电机励磁与汽门目标全息反馈非线性综合控制规律。
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