a4a3可连续工作10小时的中型大型复印机
\u590d\u5370\u4e00\u6279\u6587\u4ef6,\u5982\u679c\u7531A,B\u4e24\u53f0\u590d\u5370\u673a\u5355\u72ec\u5b8c\u6210,\u5219\u5206\u522b\u9700\u7528\u65f640\u5206\uff0c50\u5206\u3002\u73b0\u4e24\u53f0\u590d\u5370\u673a\u540c\u65f6\u5de5\u4f5c,\u572820\u5206\u65f6B\u590d\u5370\u5047\u8bbe\u8fd9\u6279\u6587\u4ef6\u5171\u6709x\u5f20
\u90a3\u4e48A\u673a\u6bcf\u5206\u949f\u590d\u5370X/40\u90a3\u4e48B\u673a\u6bcf\u5206\u949f\u590d\u5370X/50
\u540c\u65f6\u5de5\u4f5c20\u5206\u949f\u5373 X/40*20+X/50*20
\u5269\u4e0b\u7684\u6ca1\u590d\u5370\u7684\u5219\u4e3aX-(X/40*20+X/50*20)
\u8fd8\u9700\u8981A\u7684\u65f6\u95f4\u4e3a [X-(X/40*20+X/50*20)]/(X/40)=4
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理光7500，佳能5000 、6000 这些我用过的，基本都是连续工作十小时以上绛旓細璁剧殑姣旀暟鍒楅椤逛负a1,鍏瘮涓簈(q鈮0)锛屽垯a3a4=(a1q^2)*(a1q^3)=a1^2*q^5;a1a6=a1*a1q^5=a1^2*q^5=a3a4,鍚岀悊a2a5=a3a4锛涙墍浠ワ紝lg(a1a2a5a6)=lg[(a3a4)^2]=2lg(a3a4)=2lg10=2
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