| |||
benchmark | |||
datum; reference | |||
reference point | |||
mark | |||
witness mark | |||
landmark | |||
marker | |||
fixed datum; reference half-value | |||
bench mark |
reper : 17 phrases in 6 subjects |
Chemistry | 4 |
Construction | 1 |
Economics | 3 |
Oil / petroleum | 3 |
Photography | 3 |
Surveying | 3 |