['In', 'the', 'textile', 'industry', ',', 'the', 'heel', 'rack', 'is', 'a', 'crucial', 'component', 'of', 'jacquard', 'looms', ',', 'providing', 'support', 'for', 'the', 'jacquard', 'needles', '.', 'The', 'heel', 'rack', 'is', 'designed', 'as', 'a', 'perforated', 'board', 'that', 'ensures', 'the', 'proper', 'alignment', 'and', 'movement', 'of', 'the', 'needles', 'during', 'the', 'weaving', 'process', '.', 'Without', 'a', 'well-constructed', 'heel', 'rack', ',', 'the', 'efficiency', 'of', 'the', 'jacquard', 'loom', 'would', 'be', 'significantly', 'compromised', ',', 'leading', 'to', 'potential', 'defects', 'in', 'the', 'fabric', 'produced', '.']
[[6, 7, 'Textile Machinery']]