I
см. тж. сжиматься; снижаться; уменьшаться
• The range in water level between high and low tide is cut down.
• The base flow declines slowly as the ground-water supply dwindles (or goes down, or reduces).
• Production will be down (or reduced) in the aircraft industry.
• Production has continued to decline (or drop, or fall off).
• The yield falls to 80 percent at 1000°.
• In this atmosphere oxygen is reduced to 100 ppm.
• The life of the machine is impaired by excessive heating.
II (матем.)
• The fraction 4/8 can be cancelled by 2.
• The first terms cancel out only because the second terms do not cancel.
• These terms appear both in the numerator and the denominator, so that they cancel.
III (анат.)
• The muscles contract under the action of the acid.