Instructors with Fidelity's Field Services Division will work with trainees in the first phase of aviator schooling, when they are taught basics such as wing dynamics and how to approach a runway.
教师和Fidelity公司的野战勤务分部将与受训者一起进行飞行员学校的第一阶段工作，届时将教授基础课程如机翼动力以及如何在跑道上降落。
However, the two-phase flow field in drip emitter is too complex to be characterized using analytical approach now.
然而，由于灌水器内固液两相流场的复杂性，目前很难用解析的方法来描述整个流场特性。
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