炉膛、烟道、出火口

        比例尺标得清清楚楚

        一张是药材研磨的分级示意

        粗粉、中粉、细粉

        颗粒大小画了参照物

        一张是熬药时控温的时间轴

        文火、武火、停火

        每一段精确到半炷香

        下面还写着几行字：“甘草减一钱

        加黄芪二钱

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