noun 下载 🔗分享 孔, 缝隙 An opening, gap, or hole, usually small and narrow Examples : "an aperture in a wall" 墙上的一个小孔 gap part technology device physics 与AI对话词汇游戏阅读练习
noun 下载 🔗分享 光圈，孔径。 Something which restricts the diameter of the light path through one plane in an optical system. Examples : "The camera's aperture controlled how much light entered the lens, affecting the brightness of the photograph. " 相机的光圈控制着进入镜头的光线量，从而影响照片的亮度。 technology physics device 与AI对话词汇游戏阅读练习
noun 下载 🔗分享 光圈，孔径. 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." 这架望远镜的物镜孔径是100厘米。 astronomy physics technology science 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 satellite dish, with its large aperture, allowed the television station to receive a strong signal from the communication satellite. " 那个卫星天线，由于有着巨大的天线孔径，使得电视台能够接收到来自通信卫星的强大信号。 technology communication electronics space astronomy signal device machine system 与AI对话词汇游戏阅读练习
noun 下载 🔗分享 张角，孔径角 (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." 如果母线与轴线成θ角，那么这个圆锥的张角就是2θ。 math technical physics 与AI对话词汇游戏阅读练习
