cos

cos

名词 cos:

ratio of the adjacent side to the hypotenuse of a right-angled triangle

同义词：cosine

lettuce with long dark-green leaves in a loosely packed elongated head

同义词：cos lettuce, romaine, romaine lettuce

名词 co:

an odorless very poisonous gas that is a product of incomplete combustion of carbon

同义词：carbon monoxide, carbon monoxide gas, CO

a hard ferromagnetic silver-white bivalent or trivalent metallic element; a trace element in plant and animal nutrition

同义词：cobalt, Co, atomic number 27

one who refuses to serve in the armed forces on grounds of conscience

同义词：conscientious objector, CO

a state in west central United States in the Rocky Mountains

同义词：Colorado, Centennial State, CO