单词	回声带
释义	回声带医echo band；echo zone
随便看	chromium tricarbonyl chromium trichloride chromium trifluoride chromium trifluoroacetate chromium triiodide chromium trioxid chromium trioxide chromium tungstate chromium tungsten steel chromium-tungstenvanadium steel chromium-tungsten-vanadium steel chromium steel chromium steelchrome steel chromium steel containing boron chromium steel containing cobalt chromium steel containing copper chromium steel containing molybdenum chromium steel containing niobium chromium steel containing tantalum chromium steel containing titanium chromium steel containing tungsten chromium steel containing vanadium chromium steels Chromium Stress chromium sub-group compound