Assertion: slide fastener's pair | /r/HasProperty | 4 d
Facets:
Source sentences:
text: A pair of longitudinal ribs 4 d, 4 d are arranged in parallel with each other on the lower surface of the lug 4 and extend from the lower end of said front pillar 4 a to the rear lateral legs 4 b, 4 b, said ribs 4 d, 4 b having a semicircular cross section.
text: Additionally, the sliding mold 31 has a pair of grooves 31 a, 31 a for molding the ribs 4 d, 4 d running in parallel with each other on the lower surface of the lug 4 and a bulged section 31 b for molding the groove 1 b (see FIG.