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ʻO ka ulu ʻana o ka ʻoihana abrasive a me nā mea hana abrasive i 2022
Mai ka makahiki 2021, ua piʻi aʻe nā pilikia a me nā pilikia ma ka home a ma waho, a ua laha ka maʻi maʻi honua.Ua hoʻomau ka hoʻokele waiwai o Kina i ka manawa maikaʻi o ka hoʻomohala ʻana ma waena o ka hoʻonohonoho ʻana a me ka hoʻonohonoho ʻana i nā hana aupuni.Mākeke d...Heluhelu hou aku -
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Manaʻo mea refractory: He papa o nā mea metala ʻole me ka refractoriness ʻaʻole i emi ma lalo o 1580°C.ʻO ka refractoriness e pili ana i ka mahana Celsius kahi e kūʻē ai ka hāpana cone refractory i ka hana a ...Heluhelu hou aku
