Hoʻomanaʻo pūʻulu Hesheng:

He aha ka pili ʻana o ka haʻalulu?
1. Ka mānoanoa o ka pā hao: ʻoi aku ka mānoanoa o ka pā hao, ʻoi aku ka nui o ka haʻalulu;
2. ʻO ka palahalaha o ka ʻili pili: ʻoi aku ka maʻalahi o ka ʻili pili, ʻoi aku ka nui o ka haʻalulu, ʻaʻohe kūlike, a ua hoʻemi nui ʻia ka haʻalulu!
3. Huki wikiwiki: mea paʻa me ka ikaika huki nui;Nā mea hoʻoluliluli, haʻalulu liʻiliʻi;
4. Stress kuhikuhi: nui kuʻekuʻe kūkū;He liʻiliʻi ka haʻalulu pae.
No ka la'ana, ina oe omo 0.5mm manoanoa ili laumania ili a me 2mm mānoanoa rough rough plate surface, e 'ike 'oe he 'oko'a loa ka ikaika o ka momi!

Hiki i ka magnet ke komo wale i ka hao, a ʻaʻole hiki i nā mea ʻē aʻe.ʻokoʻa ka mana magnetic i hōʻike ʻia e ka pā hao adsorbed a me ka ʻili hao adsorbed.ʻOkoʻa nō hoʻi ka mana hoʻokalakupua i hōʻike ʻia e ka magnet e pili pono ana i ka pā hao a me ka mea hoʻopā wale i kahi hao liʻiliʻi.ʻO nā mea e hoʻopaʻa i ka hao a me ka hao hui pū kekahi e hōʻike i nā nui like ʻole o ka magnetism.Ua pili loa ka nui o ka mimi i ka hao a me ka mānoanoa o ka mea e omo ʻia ai, a ʻokoʻa hoʻi ka mana mana i loko o ka wai.No ka laʻana, i ka lawaiʻa ʻana i ka wai, ʻōlelo ʻia e kūʻai i nā Magnets me ke anawaena o ʻoi aku ma mua o 48 mm a ʻoi aku paha.ʻO ka ʻoi aku ka nui o ke anawaena, ʻoi aku ka maikaʻi o ka hoʻomoe.Hoʻohana ʻia ke kaiapuni like a me nā ikaika huki like ʻole.