Izici zomkhiqizo wepayipi lensimbi elakhiwe ngepulasitiki ngaphakathi nangaphandle 1. Inhlanzeko, engenabuthi, engangcolisi, engeyona i-microorganism, eqinisekisa ikhwalithi yoketshezi 2. Ukumelana nokugqwala kwamakhemikhali, ukugqwala kwenhlabathi kanye ne-marine biological, ukuhlukaniswa kwe-cathodic 3. Inqubo yokufaka iwukuba ovuthiwe, olungele...
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