常見例句of styrene plant by PSA method, high purity hydrogen and superpurity hydrogen are produced by above hydrogen by low temperature adsorption method. 採用變壓吸附法提純苯乙烯生産中含氫尾氣制取工業(yè)氫、氫,採用低溫吸附法制取高純氫、純氫。superpurity bearing steel 超純軸承鋼superpurity metal 超純金屬,超純度金屬 返回 superpurity