Chigadzirwa maitiro epurasitiki yakavharwa simbi pombi mukati nekunze 1. Hutsanana, husina chepfu, husina kusvibisa, husina microorganism, kuve nechokwadi chehutano hwemvura 2. Kurwisana nemakemikari ekuora, ivhu uye marine biological corrosion, cathodic disbondment 3. Iyo yekuisa nzira ndeyekugadzirisa vakuru, nyore...
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