查询词典 walruses

National Geograph Wallpapers Sun-Dappled walruses Arctic sunlight dapples a pod of Atlantic walruses swimming in Canada's Foxe Basin .

北极的阳光斑斑点点地落在一小群正在加拿大福克斯湾畅游的大西洋海象身上。

Arctic sunlight dapples a pod of Atlantic walruses swimming in Canada's Foxe Basin. Walruses are clumsy on land but swim with fluent grace.

北极的阳光在一群游弋在加拿大福克斯湾的大西洋海象身上投下点点光斑。

Biologists have long maintained that two groups of pinnipeds, sea lions and walruses, are descended from a terrestrial bearlike animal, whereas the remaining group, seals, shares an ancestor with weasels.

上文第三句以趋同进化解释一种现象：鳍足确实有可能是为了适应水中生活而作出的一个必要的反应；龟、鲸鱼以及儒艮同样都长有鳍足。

I normally eat seals but also can dine on walruses , mussels or even berri es and seaweed.

我通常吃海豹，但也能吃海象，蚌类，甚至是浆果和海藻。

In Igloolik, Nunavut, Nigel dives from an iceberg and swims with walruses; bowhead whales; an update on the nine arctic fox cubs.

在伊格卢利克，努纳武特，奈杰尔从冰山跳水和游泳与海象； bowhead鲸；了最新的9北极狐小熊。

Evidence suggests that the bonds between walruses are exceptionally strong: the animals share food, come to one another's aid when under attack and nurse one another's young.

证据显示，海象彼此间的关系超乎寻常的牢固：它们会分享食物，遭遇攻击会相互支援，也会照顾彼此的小象。

A hard smooth ivory colored dentine that mak es up most of the tusks of elephants and walruses .

一种坚硬而光滑的乳白色牙质，构成大象和海象的大部分长牙。

Arctic sunlight dapples a pod of Atlantic walruses swimming in Canada's Foxe Basin.

北极的日光晒起斑纹一个豆荚状的斑纹，大西洋海象群游泳在加拿大的福克斯湾。

Walruses have enlarged upper canine teeth, or tusks, up to 3 feet long.

海象具有巨大的上犬齿，或獠牙，可以达到3英尺长。

NEW YORK – Scientists say they've found a "missing link" in the early evolution of seals and walruses — the skeleton of a web-footed, otter-like creature that was evolving away from a life on land.

纽约--科学家称他们发现了一个海豹和海象早期进化的"遗失中的一环"--一种拥有蹼的脚，类水獭生物的化石。这种生物正在朝进化远离陆地方向进化。

According to our present broadcasting situation,the thesis proposes using new technology to update and reform the present HFC. It also suggests broadcasting using self-advantage and arranging EPON in order to win the supermarket.

论文从我国广电的现状出发，结合实际，积极倡导采用新技术更新、改造我国现有的HFC网络；倡导广电现阶段利用自身优势，部署EPON网络来赢取市场。

A new general kinetic equation was derived in which the effect of the removal of condensation water was taken into account completely, and was applied to the polyesterification kinetic study of AA/HPHP and AA/NPG. It was found that the reaction order of self-catalyzed polyesterification was not constant. For these polyesterifications, the reaction order was 2.5 at a low temperature, while 3.0 at a high temperature.

考虑缩合水的排除对反应体系的影响，用体积浓度单位推导出一个新的聚酯反应总包动力学方程，并应用到AA/HPHP和AA/NPG两个聚酯化反应的动力学研究中，研究发现，自催化聚酯反应的反应级数并不是固定值，对于AA/HPHP和AA/NPG两个聚酯化反应而言，低温时反应级数为2.5，高温时反应级数为3.0。