Pogwiritsa ntchito makina osindikizira a diaphragm tsiku ndi tsiku, nthawi zina kupopera kumachitika, lomwe ndi vuto lofala. Komabe, zidzakhudza kufalikira kwa makina osindikizira a diaphragm, zomwe zimapangitsa kuti kusefera kusakhale kovuta. Kupopera kuli koopsa, kumawononga mwachindunji fyuluta...
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