秋沙鸭

Any of various large diving ducks found along the seacoast: eider; scoter;''.

在海岸活动的各种大型潜水鸭；绒鸭；海番鸭；秋沙鸭。

Any of various large diving ducks found along the seacoast: eider; scoter; merganser.

在海岸活动的各种大型潜水鸭；绒鸭；海番鸭；秋沙鸭。

Common North American diving duck considered a variety of the European goosander.

美洲普通潜水鸭，被认为是欧洲普通秋沙鸭的变种。

Widely distributed merganser of America and Europe.

美洲和欧洲广泛分布的秋沙鸭。

A fish - eating duckMergus merganser,the male of which has a glossy greenish - black head and a white body.

秋沙鸭属的食鱼的鸭，雄性秋沙鸭头部光滑，呈墨绿色；鸭身呈白色

Determined the core species and the species concerned, the core species contains 8 species of fishes, 7 species of amphibians, 3 species of reptiles, 7 species of mammals, 7 species of birds, 10 species of plants, and 7 types of plant communities, totally 38 species and 7 types of communities. Four species of waterfowls: Siberian Crane, Oriental White Stork, Lesser White-fronted Goose and Chinese Merganser are among the 7 species of core bird species.

确定了核心物种与受关注物种，其中核心物种分别包括鱼类8种、两栖类3种、爬行类3种、兽类7种、鸟类7种、植物10种，植物群落7种，共38个物种与7种群落。7种鸟类核心物种中，水禽有4种，即白鹤、东方白鹳、小白额雁、中华秋沙鸭。4。

The United Nations declared Isle Royale an International Biosphere Reserve in 1981 owing to its 200 species of wildflowers (including 32 species of orchids), 238 recorded species of birds (including the American black duck and red-breasted merganser), several dozen species of trees, four dozen species of butterflies, and much, much more.

事实上，不仅不孤单，我也从未感到寂寞。1981年﹐联合国宣布皇家屿为国际生物保护圈﹐因为岛上有200种野生花卉（包括32种兰花），238种观察有案的鸟类（包括美国黑鸭和赤胸秋沙鸭），几十种树木，将近50种蝴蝶，还有许多许多其它品种。

The investigation results showed that there were 26 species of the waterfowl of Anatidae, belonging to 7 orders, of which 1 species belong to gradeⅠ key state-protected species and 3 species (Cygnus columbianus, Anser albifrons and Branta ruficollis) belong to gradeⅡ key state-protected species.

结果表明：共调查记录到雁鸭类7属26种，其中国家重点保护动物4种，包括国家Ⅰ级重点保护动物1种［中华秋沙鸭］和国家Ⅱ级重点保护动物3种［小天鹅(Cygnus columbia-nus)、白额雁和红胸黑雁］。

Any of various fish-eating diving ducks of the genus Mergus or related genera, having a slim, hooked bill.

秋沙鸭任一种秋沙鸭属或有关各属的食鱼潜水鸭，长有细长而弯曲的喙

The most oil-vulnerable birds include bald eagles, crested auklets, murres, cormorants, ravens and several sea ducks, including eiders, mergansers, black and surf scoters, and harlequins.

最易受石油危害的鸟类包括秃头鹰、海鸠、鸬鹚、大乌鸦和一些海鸭类包括绒鸭、秋沙鸭、黑斑头海番鸭、海凫。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。