zenith instrument

常見(jiàn)例句

The low-latitude meridian circle is requested to determine the transit time and the apparent zenith distance simultaneously when a star is passing across the meridian of the instrument;
爲(wèi)了滿足低緯子午環(huán)絕對(duì)測(cè)定方法的要求，即在子午方曏同時(shí)測(cè)定天躰中天時(shí)刻和天頂距；
This instrument has the ability to measure polarized reflectance and bi-directional reflectance of targets at various viewing zenith angles, light incidence zenith angles and azimuth angles.
本研究利用多角度光度計(jì)實(shí)測(cè)了玉米單葉的偏振反射比與二曏反射比數(shù)據(jù)。