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数据可视化作业

业务背景:

现有一重工工厂,工厂下有多个车间 (Workshop),每个车间内有多台不同类型的重型设备 (Equipment),比如「起重 机」,「冲压机」等,而每台设备下有一个或者多个用油点 (Points),比如「齿轮箱」,「液压管」,「别轨器」等。 每个用油点可能使用不同类型(oilType)和(比如液压油,导轨油等)不同品牌(oilBrand)的润滑油,其用量(volume)是 固定的。 每个用油点都有其推荐的换油周期(changeOilMonth)(以月为单位),每次为用油点更换润滑油时工人们都会记录该 换油日期(lastChange)。 日常使用设备时发现用油点油位偏低,工厂会为其加注以补充润滑油,或者油品达到使用期限时,工厂会为其更换新 的润滑油(换油),以上行为都会以维保记录(maintenance)的形式进行记录,记录信息包含每次所用油品的用量 (volume)。 除此之外,维保记录还会记录设备停机的信息,记录信息包含停机时长(time)

问题:

工厂的采购部门希望帮助他们预测最近一年各月份, 各类型润滑油的需求量, 以帮助他们制定采购计划. 请用可视化的方式 帮助采购部门达成目标

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