In this study,the concentrations of airborne endotoxin and airborne gram-negative bacteria were measured in five different duck stables.
对五个鸭舍环境中气载内毒素浓度与气载需氧革兰氏阴性菌浓度进行了测定,并对二者之间的数量关系进行了统计分析,同时对需氧革兰氏阴性菌的成分进行了研究。
Determination and Analysis on Selenium and Heavy Metal Elements in Duck tissue with Different Origin in Shihe Valley;
浉河流域不同来源鸭组织中硒和重金属元素的测定分析
A study on the pattern of methane emission in wetland rice-duck complex ecosystems;
湿地稻-鸭复合系统的CH_4排放规律
Sequence Analysis of the PB1 Polymerase Genes of H3 Subtype Duck Influenza Viruses;
H3亚型鸭源流感病毒聚合酶PB1基因的序列分析
Long-term toxicity of YinqiaoJiedu Keli(Granule of Lonicera and Forsythia) in ducks;
银翘解毒颗粒对鸭的长期毒性实验研究
Differential effects of animal or Vegetable Oil added in over-feeding feed of ducks on fatty liver performance;
添加动植物性油脂填饲对鸭肥肝性能的差异影响
Study of protection of Selenium on experimental Cadmium poisioning in broiler ducks;
硒对鸭镉中毒保护效应的研究
Pathological observation on ducklings infected experimentally with Riemerella anatipestifer;
人工感染鸭疫里氏杆菌雏鸭的病理学变化
Replication kinetics of duck plague virus virulent strain in parenchymatous organs of experimentally infected ducklings;
鸭瘟病毒强毒株在感染鸭实质器官内的增殖与分布
To control Rimerella anatipestifer(RA) infection in ducklings,the oil-adjust inactivated vaccine of RA isolated from Hunan province was inoculated to 4-day-old ducklings with a dose of 0.
为了有效控制鸭疫里默氏菌病的发生,我们将本地区分离鉴定的鸭疫里默氏菌作为菌种,采用液体增菌培养后灭活,加入佐剂制成油乳剂灭活疫苗,经无菌和安全检验合格后免疫4日龄雏鸭(0。
Comparison of Difference Method and Enzyme-hydrolyzed Casein Method for Determining True Amino Acids Digestibility and Endogenous Amino Acids Losses of Drakes;
差量法和酶解酪蛋白法测定鸭饲料氨基酸真消化率及内源排泄量的比较研究
The Predicting Models Study of Bioavailible Energy of Beans Meals、By-Products Cereal or Distillers Dried Grain in Drake;
糠麸糟渣、饼粕类饲料鸭有效能的预测模型研究
A 2×7 factorial experiment was used to study the effects of animal(cockerel and drake) and removal period of digesta(4、8、14、24、32、38、48 h) on the residual amount of dry matter in digestive tract.
为阐明鸡、鸭对营养物质利用率差异的原因,研究了禽别(公鸡和公鸭)和消化道排空期(4、8、14、24、32、38、48 h)对消化道残留内容物含量的影响,比较食糜在鸡和鸭消化道不同部位的排空速度和排空率。
Effects of different additives on cherry volley duck growth performance and duck house mephitis concentration
不同饲料添加剂对樱桃谷鸭生长性能及鸭舍有害气体含量的影响
Detection of Airborne Endotoxin and Airborne Gram-negative Bacteria in Duck Houses;
鸭舍环境气载内毒素与革兰氏阴性菌的检测
Study on the Heat Insulating Ability of Half-open Rolling-curtain Duck Shed in Winter and Its Influence on Egg Laying
半开放卷帘式鸭舍冬季保温性及其对产蛋的影响研究
We shall taste Beijing Roast Duck in the famous Quanjude Restaurant and enjoy Peking Opera in the well-known Lao She Teahouse.
我们将在著名的全聚德餐厅品尝北京烤鸭，并在有名的老舍茶馆欣赏京戏。
We shall taste Beijing Roast Duck in the famous Quanjude Restaurant and enjoy Beijing Opera in the well-known Lao She Teahouse.
我们将在著名的全聚德餐厅品尝北京的烤鸭，在有名的老舍茶馆欣赏京戏。
An old duck visits the mother duck.
一只老鸭前来造访母鸭。
The duck is short. The duck is short.
鸭子很矮。鸭子很矮。
North American goldeneye diving duck.
北美洲鹊鸭科潜水鸭。
an undomesticated duck (especially a mallard).
非家养的鸭，特指绿头鸭。
adult male of a wild or domestic duck.
成体雄性野鸭或家鸭。
liver, duck, mackerel pate
肝、 鸭、 鲭鱼酱.
Seven little, six little, five little ducks,
七只小鸭，六只小鸭，五只小鸭，
Four little, five little, six little ducks,
四只小鸭，五只小鸭，六只小鸭，
Seven little, eight little, nine little ducks,
七只小鸭，八只小鸭，九只小鸭，
Ten little, nine little, eight little ducks,
十只小鸭，九只小鸭，八只小鸭，
Four little, three little, two little ducks,
四只小鸭，三只小鸭，两只小鸭，
One Little, Two Little, Three Little Ducks
一只小鸭，两只小鸭，三只小鸭
The ducks look at the mother duck and her ducklings.
鸭子们盯着母鸭和她的小鸭看着。