Firikwensin tashin hankali kayan aiki ne da ake amfani da shi don auna kimar tashin hankali na nada yayin sarrafa tashin hankali. Dangane da kamanninsa da tsarinsa, an raba shi zuwa: nau'in tebur na shaft, nau'in shaft ta nau'in, nau'in cantilever, da dai sauransu, wanda ya dace da fiber na gani daban-daban, yadudduka, filayen sinadarai, wayoyi na ƙarfe, w...
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