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The result shows that firstly,zebu ismost closely related to cattle;secondly,closely related to yak,buffalo,pig,human,lastly,related to rat and mouse.The results of the phylogenetic trees reflect the molecularevolution relationship among these species,consistent with the zoological classification.The genetic distances among yak,cattle and zebu were relatively small,but geneticdistances between these three species and buffalo were relatively large.
研究表明,牦牛、普通牛和瘤牛三个物种间的遗传距离远小于它们各自与水牛这一物种的遗传距离,三者之间的亲缘关系也相对于它们与水牛间的亲缘关系较近,故将牦牛、普通牛和瘤牛划分在同一个属—牛属,而将水牛划分在另一个属更为合理。
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The results show that(1)the barrier and passage effects of longitudinal range-gorge break the law of zonal distribution of air temperature in Yunnan,the law of longitudinal distribution of air temperature is obvious and the spatial distribution is very zonally asymmetry;(2)under the effect .
结果表明:(1)纵向岭谷地形的"阻隔—通道"作用,使云南温度的纬向分布规律被破坏,经向分布规律比较明显,空间分布极不均匀;(2)纵向岭谷作用下云南热量地域分布差异显著,南部热量丰富,北部欠缺,西部比东部丰富,河谷地区热量最丰富,滇西北及山区热量最贫乏;(3)6、7月热量最丰沛,1月最为贫乏,春季热量好于秋季;(4)近30 a云南年平均气温有明显的上升趋势,存在明显的7 a、11 a、18 a周期振荡;(5)云南年平均气温具有大范围位相一致的变化趋势及东部冷与西部暖的变化类型。
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The slag test showed that β-Sialon bonded MgAION has good slag resistance. The slag corrosion mechanism is as:β-Sialon and MgAION dissolve in slag and crystallized out acerous Sialon and spinel with near sto-icheome-tric composition, and slag penetrated into the body of sample.
通过对β-Sialon复合MsAION材料的抗渣及抗钢水侵蚀性能的研究发现,该材料抗渣侵蚀性能较好,侵蚀机理为β-Sialon与MgAION溶解于渣中并析出针状Sialon和近化学计量的镁铝尖晶石,同时渣向材料内部渗透。
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Racemes 1.5–3 cm, 5–8-flowered; ovary hairy only on adaxial suture.
叶片卵形,钝的到近圆形在基部;叶柄 2-3 *倍于叶片 13 N。
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4Although Hengduan Mountains Region and its surrounding regions are the diversity center of Aletris L. in East Asia, these regions are not the speciation center.(5)Some endemic species in the regions surrounding Hengduan Mountain Region are probably the new endemic ones that had formed in the neoid period. In addition , some primitive Aletris L.
4尽管横断山及其周边地区是东亚粉条儿菜属的多样化中心,但该地区很可能并不是粉条儿菜属最早的分化中心,因横断山地区周边的一些特有种可能是在晚近的时期形成的新特有种;另外,东亚粉条儿菜属一些原始的种类主要分布于我国中东部到日本一带。
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Because of the little difference in the structure, their ratios of fluorescence emissions cover with two different broad range, which are ideal for accurate near- physiological and alkalescent conditions pH measurements respectively.
由于HC1和HC2结构上的微小差异,使得两个化合物荧光强度的比值分别落于两个不同的pH区段内,因此,可分别用于近生理条件及弱碱性条件下pH的准确测量。
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Mainly research results were as follows:(1)Proper scanning conditions which were used for establishing NIRS nondestructive detecting models were confirmed.The results of test indicated that proper scanning times was 1 times to one point;proper scanning manner was 2 times by 180°running to several points; the enactment of scanning parameters simply satisfied the condition that the spectral line of samples and the spectral line of contrast were tangent in conquest line;it can obtain the greatest prediction performance with the spectral data which were determined in an aphotic room absolutely.
具体的研究结果如下:(1)南果梨近红外透射光谱的适宜扫描方式为以果柄-果蒂为轴1 80°转动扫描2次、适宜的光谱扫描次数为单测点扫描一次、扫描参数的设定只要满足待测样品光谱曲线和参照物光谱曲线均在特征峰处相切于征服线即可,光谱测定的最佳环境条件为在完全遮光的房间内进行样品光谱的采集。
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E. , the middle Devonian sedimentary event, which sedimented a suite of epicontinental -coasta1 paraf1ysch formation (the litholcgy was consisted of low fractoin feldspare sandstone and siltstone, and a layer of argilliferous limestone); secondly, the late Variscan magmatic-tectonic event , three biotite diorite batholiths ( previous K-Ar model isotope age was about 220~260Ma and our two -stage common lead isotope age was 260+ 70Ma) and a large number of fracture-controlled quartz diorite veins intrude, and a series of NS distributed tightly complex folds and fractures were developed; thirdly, the late Paleozoic very 1ow grade metamorphism- deformation event, the chlorite-illite crystallinity indices (Δ°2θ) XRD measurements were about 0.25~0.29, which was correlated to the lower part of the anchimetamorphism, and the extremely dense schists were developed throughout the district outcrops
相当于近变质带的下部,并形成切穿矿区几乎所有主要地质体的窃集片理,这与有限相系浅变质碎屑岩的基本宏观地质特征相吻合
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Any of various deciduous shrubs of the genus Aronia in the rose family, native to eastern North America and having clusters of small white or pinkish flowers and tiny red to black applelike fruit.
美国稠李灌木原产于北美洲东部的任何一种蔷薇科北美沙果属的落叶灌木,开有一簇簇白色或近粉红色的小花且结有红色至黑色类似苹果的小果实
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The output of the general system asymptotically synchronizes with the output of any chaotic system with a known structure.
可以使通用系统的输出渐近同步于任意已知结构混沌系统的输出。
- 推荐网络例句
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And discuss some key point of integrated management system design, include hazard identification and risk assessment and risk control in the occupational health and safety management, the measure of satisfaction target of customer, the flawlessness of law system, the integration of the integrated management system and enterprise standardization system, unify lead institution and work orgnization, integreted internal audit and integrated management review.
同时,论述了一体化管理体系构建中的几个主要问题,包括职业健康安全管理中的危险源辨识、风险评价和风险控制、顾客满意度的科学监测、法律、法规体系的完善、一体化管理体系与企业标准化体系的有机结合、统一的领导机构和工作机构、一体化的内部审核和管理评审。
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Deepwater Taranaki is investigated for its petroleum potential, using all available seismic data tied to shallow-water wells.
运用与浅水井相关的现有全部震波探测数据考察了深海区塔拉纳基盆地的油藏前景。
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If you're huffing and puffing at any point during the run, slow down and make sure you can take deep breathes.
如果你任何时候在跑步过程中气喘如牛,降低速度并且确保你能够深呼吸。