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Tricholoma may be a paraphyletic genus two. The collections identified as T. caligatum is a mixture. Some parts of them from France are members of T. matsutake, the other parts from North America are closed to T. bakamatsutake and T. fulvocastaneum. Tricholoma robustum and T. focale form a clade which is obviously a sister group of the stirp Subannulate. The stirp Caligata was defined as a group mainly on the basis of the predominant veil. But from the result of molecular systematic analysis, the presence of veil is not a stable character in the matsutake group. Species having symbiosis with conifers and broad leaf tree are all transformed from those whose host specificity is not strict. The phylogenetic tree based on ITS sequences resembled the tree of NJ algorithm based on cladistic coding. In the phylogenetic tree based on morphylogical characters, T. zangii and T. bakamatsutake form a clade, but it is the result of convergent evolution as suggested by molecular analyses. The distribution area of the matsutake group can be divided into six regions: middle and northern Europe region, Mediterranean region, Hengduan Mount.— Southeastern Tibet region, Northeastern China—Japan—Far-east Russia region, the Atlantic—North America region and the Rocky Mountain region. The abundance center of the matsutake group are Hengduan Mount.—Southeastern Tibet region and the Rocky Mountain region. Hengduan Mount.
松口蘑群的分子系统学研究得出的结果有:由于粗壮口蘑和羽衣口蘑明显和亚环族(Tricholoma,section subannulate)的种类是来自同一个谱系,和其它松口蘑群的种不具有最近共同祖先,因此松口蘑群是一个多系群;松口蘑群和口蘑属其他种类的亲缘关系比和蜜环菌属更接近;梭柄松苞菇和松口蘑群的差距明显小于油黄口蘑(T.flavovirens)和棕灰口蘑;口蘑属是一个多系群;鉴定为欧洲口蘑的标本明显不是一个单系群,其中一部分是松口蘑,另一部分和黄褐口蘑及傻松口蘑(T.bakamatsutake)比较接近;划分松口蘑群的标准是菌环的存在,但从分子系统学的结果来看,菌环的存在与否并非是一个很稳定的性状;和针叶树专性共生及和阔叶树专性共生均由寄主专化性不强的种类转化而来;在形态学系统发育树上青冈口蘑和傻松口蘑被聚为一个分枝,分子系统学的研究结果表明,这是趋同进化的结果;用支序方法编码作出的NJ树的结果更接近ITS序列的结果。
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On the ground that the covariance between the disturbing gravity field elements is not isotropic, the covariance matrix has a complicated structure (its submatrix being not repetitive Toeplitz matrix) and thus its degree cannot be degraded with transformation matrix method, so it cannot be put into practice. So far, the application of least squares collocation to the modeling and data processing of the horizontal disturbing gravity field observations has not been found in literature.
由于水平扰动场元之间的协方差并非各向同性,导致协方差矩阵结构复杂(子矩阵不是 Toeplitz 循环阵),不能利用变换矩阵将其降阶,无法付诸实践,迄今尚无最小二乘配置理论应用于水平扰动场元观测量的模型化公式和数据处理方法。
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This was less because he sought publicity and more because his peers were in awe of him and talked a lot about the Thalberg touch.
这并非他个人热衷宣传而是由于同侪们对他的尊敬并且经常谈论塞拉伯格式的触感。
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Therefore, in order to guarantee the QoS requirements of each user, we proposed novel power allocation schemes to i minimize the maximum outage probability over all users, and ii to maximize the minimum rate under the outage probability and total power constraints.
由于每个用户的信道状态不同,采用传统的平均功率分配策略并非最优,为了满足用户的QoS要求,首先建立了在总功率受限条件下最小化最大用户中断概率的功率分配方案。
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For various reasons such as unliquidated, no accounts or real estate sales and other reasons not all finished delayed payment of corporate income tax.
由于各种原因,如清偿,没有任何帐户或房地产销售和其他方面的原因并非全部完成延迟付款的企业所得税。
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As the equilibrium level and properties of stability are affected by environmental parameters significantly, public investment and rural growth driven by each other will be occurred in the rural areas where economic system is emanative.
由于博弈均衡水平和稳定性状受环境参数影响较大,公共投资与农村经济增长的相互推动作用并非是无条件的,只有那些经济系统处于发散的农村地区,公共投资与农村经济增长的相互推动作用才会显现。
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As for the mesh screen type, its volume multiplied by 100% its porosity was the desirable filling amount. Having considered the forgoing findings, the researchers add up the amounts of the above two types as the filling amount of the composite micro structure, with the filling fluid being acetone. In fabricating the heat spreader, a copper pipe is added to serve the filling purpose. What is more, because the manufacturing process is not carried out in a totally clean environment, there is some noncondensible gas left, which will have a negative effect on the performance of the heat spreader. Consequently, the copper pipe has to be reserved so that the exhaust gases can be evacuated after the filling is done.
Kempers 文中可知,沟槽结构之填充量以微结构体积之80%为最佳,网格结构则是以网格体积乘上孔隙率(porosity,φ)之100%为最佳,故本研究便以两者之加总做为复合式微结构之填充量,填充液为丙酮;在均温基板之制造程序中,会加装一铜管做充填之用,且而由于制造过程并非于一完全干净之环境下完成,故板内会有一些不利于均温基板作用之非凝结性气体noncondensible gas (NCG残留,因此铜管需保留一定的长度,以方便充填完成后将废气排出之用。
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Communication between a platform in atmosphere and a underwater target and communication from underwater to above surface platform are two nonreciprocal problems.
由于上下行信道的传输特性并非是简单可逆的,必须从两个不同的方面来分析激光在海水界面上的传输问题。
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But because of the levity workingenvironment and the numberous complications of ship market in the future, it is nota easy job to work out the acoupsur conclusion of fleet programming.
然而,由于LPG船队的运行环境是复杂、多变的,影响未来航运市场状态的因素众多的,在这种情况下,周全而准确无误的给出问题的实际最优解并非是一件容易的工作。
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1B-4 is improper, not all functions are Laplace transformable
由于方程2-1B-4是奇异的,所以并非所有的函数的拉氏变换都存在。
- 推荐网络例句
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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。
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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。
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Have a good policy environment, real estate, secondary and tertiary markets can develop more rapidly and improved.
有一个良好的政策环境,房地产,二级和三级市场的发展更加迅速改善。