The size of etched pits fined with increasing frequency in AC-etching.When the temperature of etchant increased, the frequency that performed excellent capacitance must be raised.

• 在低压电蚀方面，若电蚀频率愈高，所形成之腐蚀孔洞愈小，而当温度增加时，要达到最佳静电容量之频率也必须跟著升高。