Abundance
例子
The garden was filled with an abundance of blooming flowers in the spring.
春天，花园里开满了大量的花朵。
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
The abundance of oxygen in the Earth's crust is around 46 %.
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
The abundance of carbon-12 in nature is much higher than that of carbon-13.
Scientists measured the abundance of uranium-235 in the sample to determine its suitability for reactor fuel.
词汇树
overabundance
abundance
abund
