noun 下载 🔗分享 孔，缝隙，小洞。 An opening, gap, or hole, usually small and narrow Examples : "an aperture in a wall" 墙上的一个小孔 part gap architecture space technical 与AI对话词汇游戏阅读练习
noun 下载 🔗分享 光阑，孔径。 Something which restricts the diameter of the light path through one plane in an optical system. Examples : "The camera's different apertures control how much light reaches the sensor, affecting the brightness and depth of field in the picture. " 相机的不同光阑/孔径控制着到达感光元件的光线多少，从而影响照片的亮度和景深。 physics technology device science 与AI对话词汇游戏阅读练习
noun 下载 🔗分享 孔径，光圈口径。 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. Examples : "This telescope has a 100cm aperture." 这架望远镜的孔径是100厘米。 physics astronomy technical science device system 与AI对话词汇游戏阅读练习
noun 下载 🔗分享 天线孔径，孔径 (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. Examples : "The communication satellite used for the global television broadcasts has large apertures to receive and transmit signals clearly. " 用于全球电视广播的通信卫星配备了大型天线孔径，以清晰地接收和发射信号。 technology communication electronics space astronomy signal device machine energy physics 与AI对话词汇游戏阅读练习
noun 下载 🔗分享 锥孔角，孔径。 (of a right circular cone) The maximum angle between the two generatrices. Examples : "If the generatrix makes an angle θ to the axis, then the aperture is 2θ." 如果母线与轴线的夹角是θ，那么锥孔角就是2θ。 math 与AI对话词汇游戏阅读练习
