ຮູຮັບແສງຕ່ຳສຸດຂອງກະດານແມ່ນຫຍັງ?

2023-11-09

ຮູຮັບແສງຂອງວັດສະດຸເສັ້ນໃຍແກ້ວ > 0.15mm, ຮູຮັບແສງຕ່ຳສຸດຂອງຊັ້ນໃຕ້ດິນອະລູມີນຽມ, ແຜ່ນຮອງທອງແດງ ແລະແຜ່ນອາລູມີນຽມທອງແດງແມ່ນ >1.2mm
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