General Motors executives said Tuesday that tariff concerns impacted the first quarter only marginally as profits fell 6.6%, but continued uncertainty around President Donald Trump's import taxes ...

Table 1: Global Slip Ring Market Value (US$ Bn), By Type, 2020 to 2035 Table 2: Global Slip Ring Market Volume (Thousand Units), By Type, 2020 to 2035 Table 3: Global Slip Ring Market Value (US$ Bn), ...

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Abstract: Current-collection problems can be simplified to a marked degree by helical grooves cut into the surfaces of commutators and slip-rings. Results of comparative tests before and after ...