Abundance
例子
The region is known for its abundance of natural resources.
该地区以其自然资源的丰富而闻名。
02
(in chemistry) the relative amount of an element present in the Earth's crust, expressed as a percentage of total crustal mass or in parts per million
例子
Scientists measured the abundance of silicon in various rock samples.
03
(in physics) the proportion of atoms of a specific isotope of an element relative to the total number of atoms of all its isotopes
例子
Scientists measured the abundance of uranium-235 in the sample to determine its suitability for reactor fuel.
词汇树
overabundance
abundance
abund
