这是7月18日拍摄的行驶中的“雪龙”号。经过3515海里（1海里等于1.852公里）的航行，中国第五次北极科学考察队于北京时间18日7时44分乘坐“雪龙”号极地科考船穿过北纬66度33分的北极圈。进入北极圈以后，科考队计划在北冰洋－太平洋扇区和北冰洋－大西洋扇区开展33个海洋站位的综合考察，集中实施走航观测、断面调查、锚定潜标布防与回收等科考项目，同时在典型特征海域大浮冰上设立3至5个气－冰－海联合观测冰站。新华社记者 璩静 摄     This is July 18, taken in the road“photo”number。After 3515 nm（1 the sea is equal to 1.852 kilometers）voyage，China's fifth arctic science expedition in Beijing time 18 at 7 on 44 points“photo”Th polar expedition boat through 66 degrees north latitude 33 points in the Arctic Circle。Into the arctic after，The expedition plan in the arctic ocean-Pacific sector and the arctic ocean-the Atlantic ocean in 33 sector all the comprehensive investigation，Focus on implementation go air observation、Section survey、Anchor dives standard protection and recovery in the project，At the same time in the typical characteristics on the sea ice floes big set up three to five gas-ice-the sea ice joint observation station。The xinhua news agency Qu static perturbation

    这是7月18日拍摄的行驶中的“雪龙”号。 新华社记者 璩静 摄     This is July 18, taken in the road“photo”number。 The xinhua news agency Qu static perturbation