R24 Toxic in contact with skin.
与皮肤接触有毒。
R24:Toxic in contact with skin.
与皮肤接触有毒。
The power circuit of R24 series of shallow seismographs mainly consists of power module.
R 24系列浅层地震仪电源电路主要是由电源模块组成。
The power circuit of R24 series of shallow seismographs mainly consists of power module.
R 24系列浅层地震仪电源电路主要是由电源模块组成。
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