In trawling, a fishing boat drags a bag-shaped net along the sea bottom.
用拖网捕鱼时，渔船拖着一个袋状的网，从海底兜网鱼类。
It is laid in the sea bottom and will rise to surface with its rocket propulsion.
它被储存在海底和将使用它的火箭发动机快速上浮到水面。
The long steel tower extends from the platform located above sea level to the sea bottom.
长的钢塔从高于海平面的平台延伸至海底。
Luckily, the weapons were covered with rock and sand soon after they sank to the sea bottom.
幸亏这些武器在沉入海底后不久就被沙石所掩埋。
The returned signal from the sea bottom can be recorded by the recorder on a real time basis.
该记录器对海底回波信息的记录是实时的。
So it is a comparatively simple step from locating the sea bottom to locating a shoal of fish.
所以相比较测量海底，定位鱼群是类似的步骤。
Because deep sea bottom trawling is a recent phenomenon, the damage that has been done is still limited.
因为深海海底拖网捕捞是最近才出现的一种现象，它所造成的损害还是有限的。
"Something about the chemistry of this sea bottom was very favorable to the preservation of bones," Hurum notes.
“这片海床的某些化学特性非常适合于骨骼的保存，”胡拉姆解释说。
“Something about the chemistry of this sea bottom was very favorable to the preservation of bones,” Hurum notes.
“这片海床的某些化学特性非常适合于骨骼的保存，”胡拉姆解释说。
A mathematical model of equilibrium conditions of coastal slope and sea bottom under wave action is developed.
提出波浪作用下岸坡和海底动态和静态平衡条件的数学模型。
Fish that live on the sea bottom especially commercially important gadoid fishes like cod and haddock or flatfish like flounder.
生活于海底的鱼，特别指商业价值高的鳕科鱼如鳕鱼以及黑线鳕或者类似比目鱼的鲆鱼。
A relatively permanent offshore platform made of welded tubular steel in which the legs are attached to the sea bottom by piles.
由钢管焊接而成的相对永久性的海上平台。平台的腿由桩固定于海底。
The stone, some 19 feet tall and 9 feet wide, had been in 15 pieces under the sea bottom, and was one of the largest ever found.
这块石头，高19英尺，宽9英尺，在海底已经分成了15块。这是迄今为止发现的最大的一块铭文石。
In trawling, a fishing boat drags a bag-shaped net along the sea bottom. Fish such as cod, flounder, and haddock are caught in this way.
用拖网捕鱼时，渔船拖着一个袋状的网，从海底兜网鱼类。鳕、比目鱼、黑线鳕等都是用这种方法捕捞的。
Then others discovered a striped rabbit in the Mekong Delta and a gaudy Indonesian fish that swims by bouncing haphazardly off the sea bottom.
另外，其他一些科学家不仅在湄公河三角洲发现了一种带斑纹的野兔，而且在印尼也发现了一种色彩斑斓的鱼类，这种鱼会在海床上弹跳着前进。
A sound made by tapping on the hull of a shop will be reflected from the sea bottom, and depth of the sea at that point can be calculated.
在船体外壳上敲打发出的声音会从海底反射。通过测量敲打与接受回声的间隔时间，这一点的海底深度就可计算出来。
Conservationists say longline gear also damages corals and other important habitat on the sea bottom, threatening both the turtles and the fish.
环保人士称延绳钓也破坏了海底的珊瑚和对其它动植物来说很重要的海底栖息地，对鱼类和海龟都造成威胁。
They used to be buried deep in the sea bottom, but later they were pushed slowly by the Plate movement and came to the surface of the Earth.
它们曾经深埋在海底，后来缓慢的板块运动推动它们，逐渐突起在地球的表面。
A function expansion method as in Liu et al (2007) is used to formulate the mat-type VLFS floating on the wave surface over uneven sea bottom.
采用作者们（2007）提出的函数展开法描述箱式超大型浮体漂浮在不平底部海域中的水弹性响应问题。
It is pointed out that there are sea bottom iron? Copper polymetallic deposits and sub? Volcanic copper polymetallic deposits in the ore zone.
指出该成矿带存在海底喷气沉积型铁铜多金属矿床和次火山型铜多金属矿床。
Copper zinc type and lead zinc type deposits with different ore elements were formed in Back arc basin of Erlangping Group by sea bottom spout.
二郎坪群弧后盆地在海底喷流作用下形成了不同成矿元素组合的铜-锌型和铅-锌型两种矿床类型。
Trawlers drag weighted nets across the sea bottom, not only scooping up every living thing, but also destroying coral and other types of habitat in the process.
捕鱼者用坠网拖过海底，在一网打尽所有生物的同时，还破坏了珊瑚及海底环境。
Under the assumption that the sea bottom is an almost-flat and randomly rough thin layer, a spatial correlation model for bottom reverberation was constructed.
在海底是起伏不大的非均匀薄层的假设条件下，建立了底混响空间相关函数模型。
"Sit bottom" plan in which ferry sit down the sea bottom by wharf in stable condition with the fixed height difference between wharf and ferry deck is presented.
“坐底式”方案是使渡轮坐底在停泊处的海底平面上，处于稳定的静止状态，岸轮间相对高度差也成为定值的方法。
The distributions have a close relation with bed rock property, littoral zone types, geography, water systems, hydraulic conditions and bed property of sea bottom.
砂矿的分布与滨海带的基岩性质、海岸带类型、地貌、水系、水动力条件、海底底质等密切相关。
Seabed based monitoring platform system is a complex self contained measuring device operating at sea bottom, and can carry multiple ocean environment monitoring sensors.
海床基自动监测平台系统是携带众多海洋环境观测传感器在海底工作的、自容式综合测量装置。
Seabed based monitoring platform system is a complex self contained measuring device operating at sea bottom, and can carry multiple ocean environment monitoring sensors.
海床基自动监测平台系统是携带众多海洋环境观测传感器在海底工作的、自容式综合测量装置。
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