Fig . 16 a transmissometer alongside the runway at kai tak 启德机场跑道旁的视程透射表。
2.
Fig . 7 mr . ip king hung cleaning a transmissometer along a runway 图7叶景雄先生正在清理跑道旁的视程透射表。
3.
A : a transmissometer is a piece of highly sophisticated optical equipment for measuring the visual range . its accuracy depends on the cleanliness of the lens , the same way as a pair of soiled glasses will blur one s vision 答:跑道视程透射表是一部很精确的光学仪器，镜面的清洁程度会影响它的准确性，好像眼镜沾了污垢，看东西也不清楚一样。
