守恒

守恆
shǒuhéng
  1. conservation (e.g. of energy, momentum or heat in physics)
  2. to remain constant (of a number)

CEDICT

Entry Composition

1 守 shǒu
  1. to guard
  2. to defend
  3. to keep watch
  4. to abide by the law
  5. to observe (rules or ritual)
  6. nearby
  7. adjoining
=2 恒 héng
  1. permanent
  2. constant
  3. fixed
  4. usual
  5. ordinary
  6. rule (old)
  7. one of the 64 hexagrams of the Book of Changes (䷟)
=2 恒 héng variant of 恒 héng