Lokacin amfani da firikwensin zafin jiki / mai watsawa, ana shigar da kara a cikin kwandon tsari kuma a fallasa shi zuwa matsakaicin da aka auna. A wasu yanayi na aiki, wasu abubuwan na iya haifar da lahani ga binciken, kamar su dakatar da tsayayyen barbashi, matsananciyar matsa lamba, yashwa, ...
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