concentration

/.kɒnsәn'treiʃәn/

柯林斯星级

牛津核心词汇

BNC频率: 1564

现代语料频率: 2752

大学英语四级大学英语六级考研英语

中文释义

n. 集中, 专心

[化] 浓度; 浓缩

英文释义

n. the strength of a solution; number of molecules of a substance in a given volume

n. the spatial property of being crowded together

n. strengthening the concentration (as of a solute in a mixture) by removing diluting material

n. increase in density

词态变化

复数形式:concentrations

例句

a blood disorder characterized by an increased concentration of hydrogen ions in the blood (which falls below 7 on the pH scale)

abnormally high acidity (excess hydrogen-ion concentration) of the blood and other body tissues

n a blood disorder characterized by a lower concentration of hydrogen ions in the blood (which rises above 7.45 on the pH scale)

abnormally high alkalinity (low hydrogen-ion concentration) of the blood and other body tissues

frequently used to test for the presence or concentration of infectious agents or antibodies etc. v analyze (chemical substances) v make an effort or attempt

concentration

中文释义

英文释义

词态变化

例句

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