lowering
lowermost
lowest-initial-cost
low-expansion
low-flow
low-foaming
low-force
low-frequency
low-friction
low-grade
  low-grade's
low-hardenability
low-hardening
low-head
low-helix
low-helix-angle
low-hourly-rate
low-inertia
low-lead
low-level
low-loss