Assertion: metric system's unit | /r/HasProperty | identified as fundamental units
Facets:
Source sentences:
text: In the second report (1863) they introduced the concept of a coherent system of units whereby units of length, mass and time were identified as "fundamental units" (now known as base units).
text: In the second report (1863), they introduced the concept of a coherent system of units whereby units of length, mass and time were identified as "fundamental units" (now known as base units).