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Medical Pedal Switch has two models, such as single and duplex, and subdivides into 3 specs.
医用脚踏开关系列有单联和双联两种型号3个规格.
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Diagnostic studies included scrotal scan, Doppler stethoscope or color duplex ultrasonogram.
而诊断的方法可使用核医阴囊扫描, 杜卜勒听诊器或彩色杜卜勒超音波检查.
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