这次我用的频闪频率，你们都不知道。
I'm going to strobe it with an unknown frequency... unknown to you.
闪频式现场整机动平衡仪是一种通过测相测幅进行整机动平衡的装置。
The flash frequency instrument for field whole machine balancing is a whole machine balancing equipment by measuring the phase and amplitude.
水轮机模型在转轮的下面安装一透明玻璃段以便直接观察和闪频摄影。
The turbine models are fitted under the runner with a perspex band for visualisations, view-shots and video records.
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