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- OBS (Ocean bottom station) 洋底测站
- ocean bottom station 海底观测站
- The ocean bottom is made up of smooth plains. 洋底由平坦的平原构成。
- Because the ocean surface is so smooth, people may think that the ocean bottom is made up of smooth plains. 由于大洋表面很平坦，人们可能会认为大洋的底部是由平坦的平原构成的。
- Many high-gain stations will be deployed on land and ocean bottom. 在陆地和洋底要设置许多高增益的台站。
- In recent years, ocean bottom seismic (OBS) develops quickly. 摘要近几年，OBS（海底地震仪）勘探技术得到了较大的发展和完善。
- People many think that the ocean bottom is made up of smooth plains. 人们可能会认为,大洋的底部是由平坦的平原构成的。
- We sometimes tend to think that the ocean bottom is made up of smooth plains. 我们往往误以为海底也由平坦的平原构成。
- Then, by simply holding your forearm at the bottom station, the turnstile will open automatically. 只要在底站前抬一抬胳膊,转门就会自动打开。
- Because the ocean surface is so smooth,we sometimes tend to think that the ocean bottom is made up of smooth plains. 由于洋面很平坦，我们往往以为洋底也由平坦的平原构成。
- Uplift or depression of the earth's crust, affecting large areas of land or ocean bottom. 造陆作用对大面积地和海底产生影响的地壳的升起或下陷
- Because the ocean surface is so smooth,people may think that the ocean bottom is made up of smooth plains. 由于大洋表面很平坦，人们可能会认为大洋的底部是由平坦的平原构成的。
- The total volume of sediments carpeting the ocean bottom has turned out to be surprisingly small. 覆盖海底的沉积物的总体积显得惊人地微小。
- Found worldwide, polychaetes are important for turning over sediment on the ocean bottom. 遍布全世界，多毛类在翻转海底沈积物方面有重要作用。
- Of the tens of thousands of ships on the ocean bottom, only a handful, less than 1 percent, contain negotiable treasure, such as gold and jewels. 在数以万计的海底沉船中，只有极少数，不到百分之一的沉船上有可流通的财富，如黄金和珠宝。
- In the simple case just discussed, the ocean bottom was sloping uniformly away from the beach; obviously, this is not always the case. 在刚讨论过的简单例子中,海洋均匀地从海滩向外倾斜;很明显,情况并非总是如此。
- A video, for example, shows organisms that live near the ocean bottom where volcanic activity heats the water to hundreds of degrees. 例如，录像显示一些有机体生活在海洋底、火山火力将那里的水温加热至几百度附近。
- In the past few decades the elastic properties of ocean bottom were usually ignored to simplify problems by assuming a fluid seabed. 过去为了简化问题，常将底床的弹性特质忽略而视同流体，因此并未将剪力波的效应考虑在内；
- And as the ice retreats northward, the water beneath it gets deeper, making it harder for walruses to reach the ocean bottom where they feed. 且由于冰层向北退去，冰层下的水域变得更深，从而使海象更难到达它们进食的洋底。
- But the lowest summer ice cap on record put sea ice far north of the outer continental shelf , the shallow , life-rich shelf of ocean bottom in the Bering and Chukchi seas. 但夏季冰冒的最低纪录是在远方北边的外围大陆棚还有海冰存在。大陆棚是在白令海峡和处克其海峡，又浅又充满生物的海底。
