baseline

中文： 基线、底线

1. A line that is a base for measurement or for construction. · A laser level generates a convenient baseline for interior work.
2. A datum used as the basis for calculation or for comparison. · We used the last doctor visit to provide baselines for vital statistics.
3. A line used as the basis for the alignment of glyphs. · Several characters typically have descenders below the lower baseline.
4. The line at the farthest ends of the court indicating the boundary of the area of play. · The umpire missed the call. The ball hit the baseline.
5. A configuration of software, hardware, or a process that is established and documented as a point of reference. · The baseline configuration includes unsupported components.
6. An initial measurement or observation used as a reference point to compare future changes.

复数 baselines