alkalni metali ( grupa i elemenata)

alkalni metali ( grupa i elemenata)

Metali u prvoj koloni Periodnog sistema elemenata.

0 0

完善词条

添加图像

词性：名词
同义词：
词汇：
行业/领域：天文学
类别普通天文学
Company: Caltech
产品：
取首字母的缩写词：

添加至 My Glossary

其他语言：

类似词条

zenit

天文学; 普通天文学

The point directly overhead in the sky.

рефрактор

天文学; 普通天文学

A telescope that uses as its primary optical element a lens. Binoculars are a type of refractor. In general, refractors are much more expensive to build and buy than are ...

рефлектор

天文学; 普通天文学

A telescope that uses as its primary optical element a mirror. Nearly all large telescopes in use today by amateur and professional astronomers are reflecting telescopes.

фотометрија

天文学; 普通天文学

In astronomy, the measurement of the light emitting from astronomical objects, generally in the visible or infrared bands, in which a specific or general wavelength band is ...

паралакса

天文学; 普通天文学

The apparent displacement or the difference in apparent direction of an object as seen from two different points not on a straight line with the object (as from two different ...

орбита

天文学; 普通天文学

The path of one object about another (used here for an object orbiting the sun).

新闻词条

精选词条

Suncookreti

0
词条
0
词汇
8
关注者

行业/领域：通信类别书面沟通

писмо

Писмо је написана порука на папиру. Данас је необично да се користи овај начин за комуникацију (осим за званична или важна питања) због напретка у ...