供应转速表 计数计长仪
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                                             型号: DT2234 DT2235
                                             转速: 2.5~99.999转/分
                                             分辨率∶1r/min(大于1OORPm)
                                             准确度∶ 土 (O.059n+1度)
                                             采样时间:秒1.O(大于60RPm)
                                             记忆值∶值、小值、后值