题目内容
丢失了高频成分的图像给人的感觉是比较模糊。
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证明可以通过在频率域中用原始图减去高通滤波图得到低通滤波的结果。
Limited Warranty： PASCO warrants the product to be free from defects in materials and workmanship for a period of one year from the date of shipment to the customer. PASCO will repair or replace, at its option, any part of the product which is deemed to be defective in material or workmanship. The warranty does not cover damage to the product caused by abuse or improper use.
Product Manual ：DC Power Supply provides two a regulated DC output. The DC output can be delivered in two modes:constant voltage mode and constant current mode.
Front PanelCV indicator ：lights when the power turn on and constant voltage operation；CC indicator：lights when this unit in constant current operation.
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