鲸类

This photo shows a bowhead whale that was harpooned during the whale fall migration to their winter grounds.

这张照片展示的是一头在鲸类前往其冬季栖息地的秋季迁徙中被捕获的弓头鲸。

The unicorns of the sea , Monodon monoceros are members of the order Cetacea , along with whales , dolphins and porpoises .

身为海洋中的独角兽，它们与鲸鱼，海豚和鼠豚一样，属于鲸类纲目。

Every cetacean known to man is endangered,just by going anywhere near Japan.

任何人类已知的鲸类动物，都因经过日本附近而濒临灭绝。

Every cetacean known to man is endangered just by going anywhere near Japan.

所有人类已知的鲸类只要靠近日本，就将遭受灭顶之灾。

However, during most dives below 540 metres during the day, the whales broke into a sprint of up to 9 metres per second, which in deep water is the cetacean equivalent of a world record.

尽管如此，在白天多数超过540米的深潜中，这种鲸以高达9米每秒的速度疾冲，这相当于鲸类深海下行动速度的世界纪录。

Japan's Institute of Cetacean Research defends this practice under a treaty requirement that resources are not wasted and says income from meat sales goes to research.

日本鲸类动物研究所辩称，根据相关条约规定，资源不能浪费，而且鲸肉的销售收入都投入了研究。

, and between L vexillifer and Neophocaena phocaenoides is 15. 03%(49/326bp). Two phylogenetic trees, constructed by using sequence data, suggest that Lipotes vexillifer does not share a direct common ancestor with Inia geoffrensis, thus provide molecular evidence in favor of the establishment of family Lipotidae, extant river dolphins might be a group of species with

系统发育分析结果表明：白暨豚与亚河豚没有直接共同的祖先，从而为白暨豚科的建立提供了有利的分子证据；现存的淡水豚类可能仅是外形上相似的物种群，Muizon（1984，1988a，1988b，1990）关于各类淡水豚分属于不同的总科的建议，从分子进化的角度看是完全可能的：抹香鲸类可能是最早从古鲸类中分化出来的类群。

Word soon spread that hundreds of killer whales were splashing about in this remote Norwegian fjord, and these black-backed, white-chested cetaceans became instant celebrities.

消息很快就传开了，说有几百只杀人鲸（学名Orcinus orca）在这个偏远的挪威峡湾里出没，这些黑背白腹的鲸类动物顿时声名大噪。

The scientists have dissected and just found the factor which cause the death through the corpse : Encroached on by a series of noxious substances , make its immune system suffer serious destruction, these belugas suffer from diseases , such as gastric ulcer boring a hole , hepatitis , lung abscess ,etc.; What is more, some belugas have suffered from the bladder cancer, this was really had never heard of in cetacean's animal.

科学家们经过尸体解剖才找到了引起死亡的因素：由于受到一系列有毒物质的侵害，使其免疫系统遭到严重的破坏，这些白鲸患上了胃溃疡穿孔、肝炎、肺脓肿等疾病；更有甚者，有的白鲸患了膀胱癌，这在鲸类动物中真是闻所未闻的。

Researchers used cell-phone-like tracking devices, for example, to record the Arctic migration of narwhals, a whale with a long twisted tooth, and remotely operated submersibles to reach several kilometers down into the oceans to study delicate marine animals that are impossible to collect.

研究者们使用像跟踪设备那样的微小电话，例如，记录北极的迁徙动物角鲸，一种有异乎寻常的长牙的鲸类，隐蔽地操纵着它潜入深达书千米的海底，研究不可能收集到的脆弱的海洋生物。

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