The reflectors were in some cases inclined to each other, and he remarked the circular arrangement of the images of a candle round a centre. 弗雷德里克·科利尔·贝克维尔.伟大的事实.
Electric lights with reflectors are arranged on each side of the patient’s head, while the operator looks into the eye with a telescope. Edward W. Byrn.十九世纪发明进展.
On each side of the cabinet are affixed two lamps, as in Fig.?1, with large plated reflectors about 10 or 12 inches in diameter. 威廉K.戴维.智者、化学家和伟大医生的秘密.
In such an arrangement of the reflectors, the figure seen on looking through the central aperture will consist of four parts. 弗雷德里克·科利尔·贝克维尔.伟大的事实.
In front of these three young women are placed a dozen strong kerosene lamps provided with reflectors. 威廉K.戴维.智者、化学家和伟大医生的秘密.