“航天”一词由中国航天之父钱学森钱老创造，如今“航天”一词已经家喻户晓。在一次访谈中，《钱学森传》作者叶永烈先生问钱老，如何把握有关火箭的保密尺度。他回答说：“关键看你是不是泄露要害。如果拍火箭，一个圆筒子，朝上跑，那有什么可保密？大家都是这个样子的嘛。你们别多想这些保密问题，多想了，会束缚思想。思想束缚了，什么都不敢动了。”

The drones have existed for long, but the high cost and the lack of technology have restricted the use of drone in the oil and gas industry. However, with technological advancement, the drones have come a long way and now are more reliable and provide cost-effective solutions to the oil and gas operators, globally. Drone inspection now makes it possible to access areas of oil and gas constructions that otherwise may pose health, safety, and environmental risks in a fast and safe way. Drones have several economic and environmental benefits that have enabled oil and gas companies to improve efficiency, reduce costs, and improve competitiveness. Generally, the drones are used in all phases of oil and gas activities and have the potential to support the extraction, production, and distribution. Drone provides a cost-effective and safe solution in existing and new onshore and offshore sites. In particular, the drones can help oil and gas companies to ease out the aerial, underground, and undersea inspection activities. In addition to providing visual images, they can carry out other functions, such as creating 3D maps of prospective sites and surrounding and water sampling.

宏观经济及中游制造业承压情况下，轨道交通建设逆周期调节作用凸显。我们判断全年随新基建拉动投资预期逐渐释放，全年轨交投资额大概率重回8000 亿元高位。同时随轨交通车里程基数增加，未来几年有望打开轨交存量市场。