缓和曲线推出，即曲率变化，稳步形成一条直线，以达到预期的半径。
Easement curve was introduced, whereby curvature changes steadily form a straight line to the desired radius.
车辆通过环形线圈检测器时，车体物质与环形线圈相互作用改变了线圈的谐振频率，从而形成频率变化曲线。
When vehicles passing ring coil detector, the interaction of vehicle body's substance and ring coil changes resonant frequency of the ring coil and forms a curve of frequency variation.
性能曲线是评价压气机性能的重要指标，对其变化趋势及形成机理的研究具有重要意义。
The performance curves are important for evaluation of a compressor performance and significant for research on trends and formation mechanism.
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