But still we could set this up and then switch to polar coordinates to evaluate this integral.
但还是可以建立这个积分，然后转换到极坐标系下去求结果。
Flow indicator light integral with switch cover. Indicates flow or no flow conditions.
与开关盖一起配置的流量指示灯。指示有流量或无流量情况。
The integral of RCEML is analyzed, including the supply unit, the switch unit, the measure unit and the drive coil.
对重接型电磁发射实验系统的各个组成部分作了简要的分析，包括电源部分、开关部分、测量部分以及驱动线圈等；
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