alfa čestica

alfa čestica

A kind of positively charged subnuclear particle (consisting of 2 protons and 2 neutrons) given off by some isotopes when they decay or fission.

0 0

完善词条

添加图像

词性：名词
同义词：
词汇：
行业/领域：人类学
类别 ‎体质人类学
Company: Palomar College
产品：
取首字母的缩写词：

添加至 My Glossary

其他语言：

类似词条

alfa-čestica

化学; 普通化学

A particle that is commonly ejected from radioactive nuclei, consisting of two protons and two neutrons. Alpha particles are helium nuclei. Alpha particles have a mass of 6.644 ...

čestica

化学; 普通化学

Čestice si male, određene krutine suspendirane u tekućini ili plinu.

beta čestica

化学; 普通化学

An electron emitted by an unstable nucleus , when a neutron decays into a proton and an electron. In some cases, beta radiation consists of positrons ("antielectrons" which are ...

super čestica

物理; 粒子物理学

Supersymmetry predicts the existence of superpartners of the Standard Model particles. These new types of particles, the superparticles, would represent a new quantum dimension.

centromera

人类学; ‎体质人类学

Suženje u hromozomu gde se spajaju dva ili više hromatida.

thalassemia

人类学; ‎体质人类学

Grupa genetički nasleđenih oblika anemije prouzrokovane proizvodnjom krhkih molekula hemoglobina koje su podložne uništavanju. Thalassemia se najprisutnija na Mediteranu i u ...

efekat uskog grla

人类学; ‎体质人类学

Značajno smanjenje genetičke raznovrsnosti populacije ili vrste usled ekološke krize koja uništi većinu pripadnika dotične populacije ili vrste. Ograničena genetička raznovrsnost ...

ugljeni hidrat

人类学; ‎体质人类学

A class of organic molecules that include sugars and starches.

glečerski

人类学; ‎体质人类学

A long period of time during which earth's climate cools, causing glaciers to expand out from the poles and mountains covering vast areas. The glacials of the Pleistocene Epoch ...

osteoporoza

人类学; ‎体质人类学

A bone disorder in which there is a progressive reduction in bone density resulting in brittleness and increased porosity. People with osteoporosis are at a high risk for bone ...