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CD－1500型血细胞分析仪内的测量管（Meteringtubes）用于细胞计数时标本体积（200μl）的标定及监测液体标本的流动状态。从仪器面板小窗处操作者可直接观察到测量管有上中下三条线，上下线分别夜有上部及下部光探器（opticaldetector）。当半月形液面流经上下线时导致的折光
The measuring tubes (Meteringtubes) in the CD-1500 hematology analyzer are used for the calibration of the volume of the specimen (200 μl) during cell counting and the monitoring of the flow state of the liquid specimen. From the small window of the instrument panel, the operator can directly observe that the measuring tube has three upper and lower lines, and the upper and lower lines respectively have upper and lower optical detectors. Refraction caused when the meniscus flows through the upper and lower lines