The mechanism of phase modulation is investigated based on the model of two degree of freedom in the thermoacoustic prime mover consisting of a looped tube and the resonator.
基于环形圈加谐振管的热声发动机的两自由度模型构思，在调相机理上开展了工作。
Uber gained first-mover advantage by introducing its business model, which relies on enlisting drivers to shuttle around passengers, complementing it with big subsidies.
通过引入自己的商业模式，优步获得了先发优势。这种模式是招募司机运送乘客，辅之以大额补贴。
Uber gained first-mover advantage by introducing its business model, which relies on enlisting drivers to shuttle around passengers, complementing it with big subsidies.
通过引入自己的商业模式，优步获得了先发优势。这种模式是招募司机运送乘客，辅之以大额补贴。
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