全能单位换算器
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节能效益计算器
比较两种设备（例如旧的白炽灯泡和新的LED灯）之间的能耗和成本节省。
Old Device
Power (Watts)
Quantity
New Device (e.g., LED)
Power (Watts)
Quantity
Usage & Cost
Hours of Use per Day
Cost per kWh ($)
Calculate Savings
Annual Savings:
Energy Saved (kWh)
Money Saved ($)
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