<tt id="6hsgl"><pre id="6hsgl"><pre id="6hsgl"></pre></pre></tt>
          <nav id="6hsgl"><th id="6hsgl"></th></nav>
          国产免费网站看v片元遮挡,一亚洲一区二区中文字幕,波多野结衣一区二区免费视频,天天色综网,久久综合给合久久狠狠狠,男人的天堂av一二三区,午夜福利看片在线观看,亚洲中文字幕在线无码一区二区

          Sub vessel to attempt record-setting dive

          Updated: 2012-02-13 07:59

          By Wang Qian (China Daily)

            Comments() Print Mail Large Medium  Small

          BEIJING - High underwater pressure will be the greatest danger that Jiaolong, China's manned deep-sea vessel, will contend with when it attempts to make the deepest dive on record this year, a senior official said.

          "Jiaolong will make a 7,000-meter test dive this year after several improvements are made to the submersible vessel," Jin Jiancai, secretary-general of the China Ocean Mineral Resources Research and Development Association, said over the weekend.

          Before attempting the record-breaking dive, the vessel will make a roughly 3,000-meter test dive in the South China Sea in March or April, he said.

          He did not say when the 7,000-meter dive is to take place.

          Underwater, pressure increases at the rate of one atmosphere for every 10 meters of depth. One atmosphere is equal to about 10 metric tons of force per square meter.

          If the planned dive is successful, Jiaolong will have proven itself capable of reaching nearly any seabed in the world. China will also hold the record for performing the deepest dive, surpassing Japan, whose Shinkai 6500 dove 6,527 meters in August 1989.

          Jiaolong - designed to reach a maximum depth of 7,000 meters - carried three people to 5,188 meters below sea level in a test dive in international waters in the northeastern Pacific Ocean last year, indicating the vessel is capable of reaching more than 70 percent of the planet's seabeds.

          "If Jiaolong succeeds in the 7,000-meter dive, the vessel will play an important role in future scientific research and mineral exploration in the deep sea," said Tao Chunhui, professor of the Second Institute of Oceanography and chief scientist on the Chinese scientific research ship Dayang Yihao, or Ocean No 1.

          According to the 12th Five-Year Plan (2011-15) released by the State Oceanic Administration on Friday, China is working faster to build both a ship that will take deep-sea vessels to dive sites and another vessel that will conduct scientific research in the ocean and explore the underwater world.

          Over the next 20 years, China will push its technical capabilities to catch up with advanced nations in conducting deep-sea research. Scientists say the ocean floor contains rich deposits of a range of potentially valuable minerals, but the extreme depths pose obstacles to gathering them.

          Last year, China became the first country approved by the International Seabed Authority to look for polymetallic sulphide deposits, a recently discovered mineral source, in the Southwest Indian Ridge, a tectonic plate boundary on the floor of the Indian Ocean.

          In 2001, the China Ocean Mineral Resources Research and Development Association signed a 15-year contract with the seabed authority to search 150,000 square kilometers of seabed for polymetallic nodules, small rocks containing metal ore.

          主站蜘蛛池模板: 久久综合国产精品一区二区| 亚洲AV无码成人精品区一本二本| 国产精品一区二区久久岳| 人人做人人澡人人人爽| 免费在线成人网| 老外女人毛黑p大| 久久99精品久久久久久| 激情综合色综合久久综合| 国产亚洲精品一区二区无| 丰满人妻被黑人连续中出 | 年轻女教师hd中字| 亚洲AV无码不卡在线播放| 成 人影片 免费观看| 一区二区三区四区五区自拍| 国产高颜值不卡一区二区| 国产成人人综合亚洲欧美丁香花| 国产不卡精品一区二区三区| 欧美成人精品手机在线| 无码天堂亚洲国产AV| 人人妻人人澡人人爽| 精品人妻伦一二三区久久aaa片| 国产白丝网站精品污在线入口| 国产精品夜间视频香蕉| 东京热一精品无码av| 精品人妻伦一二三区久久| 亚洲中文字幕在线二页| 日韩大片一区二区三区| 欧美孕妇乳喷奶水在线观看| 国产一区二区亚洲av| 夜爽8888视频在线观看| 九九热在线精品视频观看| 亚洲VA中文字幕无码久久不卡 | 久久不见久久见免费视频观看| 国产精品va在线观看无码不卡| mm1313亚洲国产精品无吗| 国产精品美女黑丝流水| 亚洲中文字字幕精品乱码| 亚洲av永久无码精品网站| 成人看的污污超级黄网站免费| 被黑人伦流澡到高潮HNP动漫| 我趁老师睡觉摸她奶脱她内裤|