在水下

Tip from Val: To make the Rainbow Fish Crafts look underwater, stick it to a blue sheet of construction paper and glue on top one sheet of slightly crumpled plastic wrap.

Val 技巧：要做看起来水下的彩虹鱼工艺，把它黏在一张蓝色型版纸上并贴在稍微地被弄皱的塑料上。

Accurate station keeping is demonstrated in experiments with our four-DOF underwater vehicle and the observed target which is a regular tetrahedron with four ball-like culminations in our indoor water tank.

悬停定位具有两个特点：首先，它是一种动力定位，即在定位传感器的引导下，依靠自身的动力，在控制系统的指挥下抵抗外界扰动而保持某一位姿；其二，它是一种局部定位，水下机器人相对作业目标的运动空间范围一般不会很大。

The underwater enclosure was built along the boundary of target water body and the lake bottom sludge was filled into the enclosure by twisting-suction dredging ship according to designing elevation for the purpose of formation of slope riffle, which will improve natural condition of littoral zone of lake, and create favorable habitation condition for ecological restoration in littoral zone of lake.

文章介绍最新开发的湖滨陡坎沿岸水域基底修复技术，主要采用人工方法在需要进行大型水生植物群落恢复的湖滨陡坎沿岸的水域实施基底修复工程措施，在目标水域边界构筑水下围埝，采用绞吸式挖泥船将疏浚的湖泥按设计高程要求吹填至基底修复工程区内，形成缓坡浅滩，改善湖泊沿岸带自然条件，为湖泊沿岸带生态修复创造良好的生境条件。

Valve at the end of energy conservation is a valve, generally installed in the suction pump at the bottom underwater.

在阀门应用中底阀是一种节约能源的阀，一般安装在水泵水下吸管的底端。

As I squinted in the direction of the sounds, the rounded gray back of a sea creature rose amid a red froth, rolled turbulently at the surface, then sank back into the Gulf.

我顺着声音的方向看过去，在一堆红色的泡沫中发现一种海洋生物圆圆的灰色的脊背，它在水面上激烈地摆动着，然后又沉到水下。

It's great for fishing in shallow and rough water or reducing undesired clutter in the water column.

这比较适合在混水和水下杂物比较多在你的声纳上显示的干扰性杂波比较多时使用。

In the water maze task, a platform is placed in a tank of water under the water surface.

在水迷宫任务，一个平台，是摆在一个水槽的水下水面。

Wollunqua was so vast in length that he was able to emerge from his waterhole and travel many miles with his tail still being submerged back home.

伏龙夸蛇的身体长度很长，他能够离开他的水下洞口爬行许多英里而浸没在水中尾巴仍然在家中。

A Cape fur seal (Arctocephalus pusillus pusillus) undulates in rhythm with fronds of kelp in the waters off Gansbaai, South Africa.

水下动物图片集。一只毛皮海豹波浪起伏的在节奏与叶状体的海带在海面远处是Gansbaai ，南非。

When coming up to the surface, they must spend as much time decompressing as they spent under 50 meters of water.

在回到水面后，他们必须花上在50米的水下相等的时间来减压。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐