n.太陽熱力計；日溫計

An instrument in which a mirror is automatically moved so that it reflects sunlight in a constant direction. It is used with a pyrheliometer to make continuous measurements of solar radiation. 定日鏡一種儀器，裝有一面會自動調(diào)控的鏡子，以便不斷朝某一恒定方向反射日光。與太陽熱量計同時使用，以保持對太陽輻射的不間斷測量

An instrument in which a mirror is automatically moved so that it reflects sunlight in a constant direction.It is used with a pyrheliometer to make continuous measurements of solar radiation. 定日鏡一種儀器，裝有一面會自動調(diào)控的鏡子，以便不斷朝某一恒定方向反射日光。

Angstrom compensation pyrheliometer 埃斯特朗補償太陽熱量計

michelison bimetallic pyrheliometer 邁克爾遜雙金屬直接日射計

absolute ( self-calibrating ) pyrheliometer 絕對直接日射表