上新世和第四纪主要为浅海陆架及半深海充填沉积。
There were mainly neritic shelf and bathyal filling sedimentation in the Pliocene and Quaternary.
晚中新世以后，盆地进入浅海半深海沉积环境的裂后热沉降期。
After Late Miocene, the basin got into a post_rift thermal subsidence stage in a shallow to semi_deep sea environment.
半深海区是微暗发亮的中央地域，因为它没有进行光合作用生产者。
The bathyal zone is the dimly lit middle zone, which because it has little sunlight does not contain photosynthesizing producers.
半深海-深海相区、滨浅海相区和三角洲相区是较为有利的油气分布区。
The bathyal - abyssal facies , littoral facies , neritic facies and delta facies are beneficial to and gas exploration.
礼岷前陆盆地经历了早期深海—半深海的复理石沉积阶段和晚期陆相磨拉石沉积阶段。
The Lixian-Minxian foreland basin undertook abyssal-bathyal flysch deposition at its earlier evolution stage and continental molasse stage at its later evolution stage.
据估计，在最高的海底山中，几乎一半是在深海海底，而且那里海洋生物特别丰富。
It is estimated that roughly half of the world's highest seamounts-areas that rise from the ocean floor and are particularly rich in Marine life-are also found in the deep ocean.
缅因只剩下了70条深海捕鱼船，不足20世纪90年代的一半，近十年减少得尤为迅速。
There are only 70 groundfishing vessels left in Maine, less than half the number in the 1990s, and a far cry from decades past.
半潜式钻井平台是深海石油勘探开发的关键设备，而双井架钻机已逐渐成为第六代深水半潜式平台的主流配置。
Semi-submersible drilling platform is key equipment for deep water exploitation and dual derrick RIGS has been main platform of 6th semi-submersible drilling platform.
深海石油开发大多采用半潜式平台、钻井船等浮式钻井装置进行钻井作业。
Semi-submersible platform, drilling ship and other floating drilling devices are mostly used to drill in the deep-sea oil development.
阐述了超高强度的淬火回火钢（调制钢）在深海半潜式钻井平台中的应用。
This paper describes the application of high strength quenched and tempered steel in semi-submersible drilling platform.
阐述了超高强度的淬火回火钢（调制钢）在深海半潜式钻井平台中的应用。
This paper describes the application of high strength quenched and tempered steel in semi-submersible drilling platform.
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