dewcap

常見例句

Any telescope in bright local lights should also have a long dewcap or side shield to keep the light out of the tube.
西面的墻是用黑布做的，繩索用于增加整個建筑的穩(wěn)定性。
The tube and dewcap are painted, the machined metal parts are hard anodized, and the tube rings are satin-finished aluminum castings.
全鏡金屬制作并作氧化鍍層,而且鏡桶是整體一次完成的鋁鑄件，運行極其精密順化。