Intsingiselo kunye neempawu zemithombo yegesi: Uhlobo loxinzelelo lwegesi ephumayo, eyaziwa ngokuba yintonga yenkxaso, inobude benkxaso kunye neminye imisebenzi.Isekelwe ikakhulu kuxinzelelo oluphezulu, igesi engasebenziyo (nitrogen) njengamandla, kunye nofakelo olulula, ukusetyenziswa okukhuselekileyo, akukho kugcinwa, ...
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