draft standard; draft of a standard
Technical term used in standardization contexts, such as ISO or JIS, referring to a preliminary version of a standard before formal approval.
This draft standard is scheduled to be discussed at next month's committee meeting.
原案 is a general term for 'original draft' or 'proposal', while 規格原案 specifically refers to a draft of a standard.
規格 means 'standard' or 'norm', whereas 規格原案 is the draft version of such a standard.
Compound of 規格 (standard) and 原案 (original draft).