1995年 8月，日本海洋科技中心开发的无人探测机“海沟”号潜到了关岛南部约 300公里处的马里亚纳海沟最深处的 1092米处。在此约 35年前，美国海军对从法国购进的载人潜水船“ Birch Scarf”进行改装后重新命名为“的里雅斯特”号，并将其潜入到该海沟的海底。钛合金操作臂 In August 1995, the unmanned exploration aircraft “Trench” developed by Japan’s Marine Science and Technology Center dive to the deepest 1092 meters of the Mariana Trench, about 300 kilometers south of Guam. About 35 years ago, the United States Navy converted a manned submersible “Birch Scarf” purchased from France and renamed it “Trieste” and sneaked it into the seabed of the trench. Titanium operating arm