noun🔗Share開口部, 穴, すき間An opening, gap, or hole, usually small and narrow"an aperture in a wall"壁の開口部。gapparttechnologydevicephysicsChat with AIVocabulary GamePractice Reading
noun🔗Share絞り, 口径Something which restricts the diameter of the light path through one plane in an optical system."The camera's aperture controlled how much light entered the lens, affecting the brightness of the photograph. "カメラの絞りは、レンズに入る光の量を制御し、写真の明るさに影響を与えました。technologyphysicsdeviceChat with AIVocabulary GamePractice Reading
noun🔗Share口径, 開口部The diameter of the aperture (in the sense above) which restricts the width of the light path through the whole system. For a telescope, this is the diameter of the objective lens."This telescope has a 100cm aperture."この望遠鏡は100cmの口径を持っています。astronomyphysicstechnologyscienceChat with AIVocabulary GamePractice Reading
noun🔗Share開口部、アンテナ(communications) The (typically) large-diameter antenna used for receiving and transmitting radio frequency energy containing the data used in communication satellites, especially in the geostationary belt. For a comsat, this is typically a large reflective dish antenna; sometimes called an array."The satellite dish, with its large aperture, allowed the television station to receive a strong signal from the communication satellite. "大きなアンテナを持つ衛星放送受信アンテナは、テレビ局が通信衛星から強力な信号を受信することを可能にしました。technologycommunicationelectronicsspaceastronomysignaldevicemachinesystemChat with AIVocabulary GamePractice Reading
noun🔗Share開口角(of a right circular cone) The maximum angle between the two generatrices."If the generatrix makes an angle θ to the axis, then the aperture is 2θ."母線が軸に対して角度θをなす場合、開口角は2θです。mathtechnicalphysicsChat with AIVocabulary GamePractice Reading
