RJ-3高頻近區(qū)電場(chǎng)測(cè)量?jī)x
RJ-2高頻電磁場(chǎng)近區(qū)場(chǎng)強(qiáng)測(cè)定儀
RJ-2A數(shù)字高頻電磁場(chǎng)(近區(qū))場(chǎng)強(qiáng)儀
RJ-5H工頻磁場(chǎng)(近區(qū))場(chǎng)強(qiáng)儀
RJ-5工頻電場(chǎng)(近區(qū))場(chǎng)強(qiáng)儀