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holstein n.(荷蘭)霍爾斯坦種乳牛〔體形大,有黑白斑。原產荷蘭 ...

holster

Based on the given linear holstein model , and using the variational method we obtained the ground state properties of the electron - phonon interaction system with cubic and quartic lattice ( phonon ) terms . we obtained the relations between the ground state energy and the phonon squeezing effect and polaron squeezing effect as well as the variation of the polaron bandwidth 在線性holstein模型的基礎上,采用變分法得出了含晶格(聲子)三次方和四次方勢下系統基態特性,得到了基態能量與聲子壓縮效應和極化子壓縮效應的關系,并求得了極化子能帶寬度的變化規律。

In the thesis we firstly introduce one - dimensional spin - 1 / 2 jordan - wigner transformation and the holstein - primakoff transformation that are used widely in the quantum many - body theory . secondly , another form of one - dimensional spin - 1 / 2 jordan - wigner transformation is discussed 本文中,我們首先介紹了在量子多體理論中廣泛應用到的一維自旋- 1 2 “ jordan - wigner ”變換以及“ holstein - primakoff ”變換。

The ministry said on monday that the 23 - month - old holstein cow in ibaraki prefecture , north of tokyo , had an “ unusual “ form of the brain - wasting ailment , formally known as bovine spongiform encephalopathy ( bse ) 政府部門說,這頭牛為荷蘭種奶牛,年齡為1歲11個月,在東京北部的茨城縣被發現患有一種不同尋常的腦虛損病,即通常所稱的牛海綿體病(瘋牛病) 。

The regional government of schleswig - holstein , which is home to 20 ostrich farms , said studies had shown the birds , which can grow up to six feet tall and weigh up to 330 pounds , each need 2 , 150 square feet of space 石勒蘇益格-荷爾斯泰因州(簡稱石荷州)有20家鴕鳥場,該地政府稱研究顯示高可達6英尺、體重可達330磅的鴕鳥每只需要2150平方英尺的空間。

If the proportion of cvm carriers in the nucleus breeding group of holstein is high , great economic losses to dairy industry would be caused by the death of affected homozygous fetuses and the abortion of pregnant cows 當荷斯坦牛的育種核心群中攜帶者達到一定比例,脊柱畸形綜合征就會對奶業造成巨大損失。

At the end of 2001 , nucleus breeding herds had grown to 448 milking age holsteins of pure canada breeding with average milk production per 305 - day lactation of 8 , 366 kgs 到2001年年底,純加系的核心牛群達到了448頭成母牛,其305天產奶量平均達到了8336公斤。

Complex vertebral malformation ( cvm ) , a lethal autosomal recessive inherited defect in holstein breed , was newly reported in demark 摘要荷斯坦奶牛脊柱畸形綜合征是近年新發現的一種常染色體隱性遺傳病,該病對純合子胎兒是致死性的。

Many similarities exist between the dac and member driven organizations in canada , such as holstein canada and the dairy farmers of canada 中國奶協和加拿大的奶業服務組織如加拿大荷斯坦奶牛協會和加拿大奶農組織具有許多相似之處。

Associations between genetic polymorphisms at four loci and milk somatic cell count and score in xi ' an population of chinese holstein 西安地區荷斯坦牛群4個基因位點遺傳變異與牛乳中體細胞數和體細胞評分的相關分析

Pcr - rflp polymorphism of insulin - like growth factor binding protein 3 gene and its association with milk trait of chinese holstein 多態性與中國荷斯坦牛泌乳性狀的相關分析

Analysis of relationship between linear type assess , type of figure properties and milk production in holstein cows 荷斯坦奶牛體型線性評定及其性狀與產奶量的相關性分析

Holstein any of a breed of large black and white dairy cattle originally developed in friesland 霍斯坦種乳牛,一種原產于荷蘭弗里斯蘭的黑白花大奶牛。

Correlation analysis of linear conformation traits and milk production in holstein cows 荷斯坦奶牛體型線性性狀與產奶量的相關性分析

The correlation analysis of conformation linear traits and milk production in holstein 荷斯坦牛體型線性性狀與產奶量的相關性研究

The character and correlation analysis on lactation curve of high - yield holstein cows 高產荷斯坦奶牛泌乳曲線的特征及相關分析

Analysis of genetic polymorphisms at - cn exon 4 and exon 5 in southern chinese holstein cattle 第五外顯子的多態性研究

Holstein was inhabited by a population of about 600 000 entirely german 荷爾斯泰因曾住有六十萬人口,皆為德國人。

The german holstein cows rank among the world ' s best of holstein breed 德國的荷斯坦奶牛是世界最好的荷斯坦種群。

The linear type assessment analysis reports of holstein cows in ningxia area 寧夏荷斯坦牛群體型線性評定分析報告