droplet-free
droplet-laden
droplight
drop-molding
drop-off
drop-off-to-pickup
drop-out
dropout
droppable
dropped
  dropper
dropping
drop-point
drop-shatter
dropside
drop-sleeve
dropsonde
drop-weight
dropwindsonde
dropwise
drosometer

    dropper spacing

    расстояние между струнами контактного провода