Visitors look round a Bridget Riley exhibition in Paris. The British artist is famous for her so-called Op-art paintings, which make use of optical illusions.
在巴黎，游客在看布里奇特·莱利展览。英国著名的艺术家因为她的那些所谓作品-艺术画而著名，那是利用光学幻想。
The abnormal block and black round structure of 50 axletree steel was studied and analyzed using optical microscopy, transmission electron microscopy, electron probe and so on.
用光学显微镜、透射电子显微镜以及电子探针等现代材料试验手段对50钢中存在的大块黑色团状异常组织进行了研究和分析。
Space laser communication, which is regarded as Inter-satellite optical links can establish a round-the-clock, high-flexibility, high-agility, high-reliability information platform.
作为星际光链路的空间激光通信可建立全天候、高机动性、高灵活性、高可靠信息平台。
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