phase II第二阶段phasen.相位；方面；局面；阶段；时期vt.逐步执行phased satellite system相控卫星系统phase-angle voltmeter相角电压表phase pattern synthesis相位波瓣综合phase transfer function相位传递函数phase-only modulation纯相位调制phase place measurement相位测量phase-shifting method相移法Phase portrait of plane平面相图phase containing carbon含碳物相Phaseolus radiatus L.的 种子皮。

1. For the first category, we consider the boundary flow as an annular zone completely isolated from mixing with the main flow environment.
   对于第一个范畴，我们把边界看作是完全隔离的环形区域，并不与主流环境相混合。