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DE3D ???
?? 7??? 3D ???? ??? ??? ??.
?? ???? 3D ???? ??? ??? ??? ????: ?? ? ?? ??, ??, ?? ?? ??, ?????, ??? ??.
Group Standards of the People's Republic of China, 3D ???
Professional Standard - Energy, 3D ???
Professional Standard - Electron, 3D ???
國(guó)家市場(chǎng)監(jiān)督管理總局、中國(guó)國(guó)家標(biāo)準(zhǔn)化管理委員會(huì), 3D ???
Hubei Provincial Standard of the People's Republic of China, 3D ???