船底

Habitat destruction from coastal development and trawler fishing boats that drag weighted nets across the ocean bottom.

来自海岸的发展，和拖捞船钓鱼对栖息地破坏是因为拖曳船船底的重量

At last, all related problems due to ship type and towing speed influencing the quality of captured images and results were discussed. A ship model with V-shape bottom and protruding keel might cause some disadvantages for PIV measurements. The use of longer laser light ducts extending deeper is a possible solution. A ship model with light yellow paint will cause the unproportionate of light and will cause white background on captured images. It is suggested to re-paint the ship model in black or dark colors to solve this problem. In high-speed test conditions, a ship model's bow waves entrain large amount of air bubbles into water and those bubbles will block the view of camera causing some random black spots in the images. Thus, it is necessary to remove the useless black spot data and repeat the same test condition if statistics requires enough number of images.

本文讨论建立此系统之技术及实验方法，设备的架置方式和配置为一可调性调整之开放式架构，质点施放方法以一自制的施放架於实验前先布置於测试段中，并制定一实验流程规范，再分别针对实验所得滑航型及排水量型船模的流线方向及切流线方向各不同位置及船速之速度进行流场分析；实验结果发现不同船型会造成不同的实验困难：船形上突起之龙骨及V形船底会遮住照明光线，可利用较深之导管调整光页角度改善；而浅色船模表面会造成光线的不均匀，可以更改船模涂装颜色改善；高速实验的气泡会不定点的遮住光线，须先除去无资料区域并使用更多资料组数来改善。

They cheered each other on to draw the ships into the sea; they cleared the channels in front of them; they began taking away the stays from underneath them, and the welkin rang with their glad cries, so eager were they to return.

海船扑跑，踢卷起纷飞的泥尘，相互间大声嘶喊，意欲抓住海船，拖人闪亮的水道。他们清出下水的道口，喊叫之声响彻云天；士兵们归心似箭，动手搬开船底的挡塞。

She lay almost where she did at first, but not quite; and was turn'd by the force of the waves and the winds almost bottom upward, against a high ridge of beachy rough sand; but no water about her as before.

小艇差不多还躺在原来的地方，但位置略有变更，并且经风浪翻了个身，船底朝天，搁浅在一个高高的沙石堆上，四面无水。

This labeled image identifies some of the significant features in the Carina Nebula region.

这张有标注的图片标明了船底座星云区域内的一些主要结构。

NGC 3372, known as the Great Nebula in Carina , is home to massive stars and changing nebula.

NGC 3372，被称为船底座大星云，拥有众多质量巨大的恒星，不断改变着星云。

This is the Carina Nebula, and the image represents a 50-light-year-wide swath of the star-birthing region.

这是船底座星云，照片覆盖了这个宽50光年的恒星形成地带。

The top of the Keyhole Nebula, the most prominent feature embedded inside Carina , is on the left.

深植于船底座中最显著的结构&锁眼&星云的顶部处在左边。

The Carina Nebula is a large bright nebula that surrounds several clusters of stars.

船底座星云是一个巨大明亮的被一些恒星包围着的星云。

Any of various marine crustaceans of the subclass Cirripedia that in the adult stage form a hard shell and remain attached to submerged surfaces, such as rocks and ships' bottoms.

藤壶一种蔓足亚纲的海洋甲壳类动物，成年期形成硬壳且固着在没入水的表层，如岩石和船底

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失