Reverse osmosis (RO osmosis) was invented and studied since the 50s and developed completely in the 70s of the 20th century.
ການຊຶມໄຫຼຄືນ (reverse osmosis - RO) ໄດ້ປະດິດແຕ່ງແລະ ຄົ້ນຄ້ວາຕັ້ງແຕ່ບັນດາປີ50ແລະ ພັດທະນາໄດ້ສົມບູນແຕ່ບັນດາປີ70ຂອງສະຕະວັດ20.