The present article is aimed at studying the change of eco-environment, or the habitat of the wild duck in Weihe River Valley, Shaanxi Province.
通过渭河咸阳段气候、水质、水域面积、植物等环境因素的改变对野鸭数量分布影响的调查 ,表明环境的恶化导致了动物的生存受到威胁 ,数量减少 ,分布区域缩小。
Amplified fragment length polymorphic technique was used to estimate the genomic DNA polymorphism among eight species of domestic ducks and two species of wild duck.
利用AFLP技术分析我国8种常见家鸭和2种野鸭基因组DNA的多态性,在选取的17对引物中,有9对能得到重复性好的多态性扩增条带。
Study on the Changes of Calcium, Phosphorus and Potassium Contents in Mallard Eggshell at Different Hatching Phases;
野鸭不同孵化阶段蛋壳内钙·磷·钾含量的变化研究
Analysis on meat production and quality of main mallard breeds in Zhejiang province;
浙江省主要野鸭品种(系)生产性能及肉质性状比较分析
A study on the hunting quantities of wild ducks was carried out in Hong Hu lake,Hubei province, during the peried of winter from 1981 to 1990.
1981～1990年冬季调查了洪湖野鸭捕获量，捕获的野鸭有12种，其中种群相对密度大幅下降的有7种，占种数58。
The effect of 10% chlorfenapyr SC on the reproduction of Mallard duck was tested.
试验测定了10%溴虫腈悬浮剂对野鸭(Mallardduck)慢性繁殖的影响。
a wild cat, giraffe, duck
野猫、 野生的长颈鹿、 野鸭
adult male of a wild or domestic duck.
成体雄性野鸭或家鸭。
This duck is a cross between a wild duck and an ordinary duck.
这种鸭子是野鸭和普通鸭子的混种。
Barbary duck is a cross between a wild duck and an ordinary duck.
巴巴里鸭系由野鸭与普通鸭杂交而成。
A barbary duck is a cross between a wild duck and an ordinary duck.
芭芭内鸭系由野鸭与普通鸭杂交而成。
A barbary duck be a cross between a wild duck and an ordinary duck
芭芭内鸭系由野鸭与普通鸭杂交而成
He potted at a sitting wild duck.
他射击一只栖息的野鸭。
He goes to Scotland every year to shoot wild duck.
他每年到苏格兰打野鸭。
The wild duck fell at the sound of the shotgun.
鸟枪一响，野鸭应声而落。
The ducks lighted on the pond.
这些野鸭歇落在池塘里。
He took his rifle to shoot wild duck.
他拿起枪打野鸭子。
A wild game bird, such as a duck, goose, or quail.
野禽，猎鸟一种野生的猎鸟，如野鸭、野鹅或鹌鹑
A wild duck(Anas platyrhynchos)of which the male has a green head and neck.Most domestic ducks descend from the mallard.
绿头鸭一种野鸭（绿头鸭），其雄鸟具有绿色的头和颈。大部分驯化了的家鸭都是绿头鸭的后裔
Evaluation of Genetic Diversity of Some Wild and Domestic Ducks in China Based on Microsatellite Markers
我国几种野鸭和家鸭遗传多样性的SSR分析
freshwater duck of Eurasia and North Africa related to mallards and teals.
欧亚大陆和非洲北部的淡水鸭，与绿头鸭和短颈野鸭有亲缘关系。
A North American wild duck(Aythya valisineria)having a reddish - brown head and neck and a whitish back.
帆布背潜鸭一种北美野鸭（帆背潜鸭），头颈呈红褐色，背呈浅白色
He succeeded in decoying the ducks toward his blind [hide].
他成功地把野鸭引诱到他的隐藏处。
He brought down several wild ducks on his last hunting trip.
他最后一次出猎打到了几只野鸭。