系

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。

In Athens he financed all four great philosophical schools: the academy, the lyceum, the garden, and the stoa.

马可奥瑞琉斯在经济上支持雅典的四所著名的哲学讲堂：柏拉图一系的学院，亚里斯多德一系的学苑，伊壁鸠鲁一系的学园，以及斯多各派的学廊。

Firstly, based on the distribution of global earthquakes and their kinematic and dynamic characteristics, the most active global-scale tectonics can be divided into three first-order tectonic system: the circum-Pacific deep subduction tectonic system, which is the region that oceanic lithosphere subduct under continental lithosphere; the mid-oceanic ridge tectonic system, where the joint tectonics of rift valleys and transform faults distribute widely; and the continent-continent shallow underthrusting tectonic system, where the different kinds of continental faults affect each other.

其中，环太平洋构造系以大洋岩石圈向大陆岩石圈俯冲为构造特征；大洋中脊构造系以大洋岩石圈内裂谷-转换断层的组合构造为特征；大陆构造系则以大陆岩石圈的边缘和内部各种断裂的相互作用为特征。

After giving the concept and some elementary properties of subideals of Lie triple system,the author shows that every subalgebra of a nilpotent Lie triple systems is a subideal and a Lie triple system is solvable if every subalgebra is a subideal.

证明了幂零李三系的子系数都是次理想；当李三系的所有子系数都是次理想时，该李三系是可解的。

This paper presents the different arranging style of beam and arch and suspender which are the main parts of the reinforced concrete tied-arch bridge. It is brief the analysis of the mechanical behaviors of each type.

本文介绍了结合系、吊杆和拱肋等系杆拱桥的主要组成部分的不同布置形式，简要地从力学角度出发分析了不同系杆拱桥的特征。

A measuring and optimum aligning system of turbo—generators'shafts center was introduced,it can be manually measured and calculated and then transmit the data to the computer,or can bc monitored,optimally aligned and datamanaged directly by conlputor.

摘 要：介绍了一种汽轮发电机组轴系中心测量优化调整系统，既可用于持检测仪进行机组轴系中心的测量计算，并将数据传输至计算机；亦可直接用计算机进行检测，进行机组轴系中心的优化调整及数据管理。

Epicyclic transmission ratio calculating basic approach is to reverse the law, that is, to the body plus a angular velocity, is the epicyclic gear train in the angular velocity of the tie bar.

周转轮系的传动比计算基本方法是反转法，即给整个机构加一个角速度，是周转轮系中系杆的角速度。

The two kinds of trial designs can reduce about 30% weight of tie beam, and the corrugated steel webs tie beam needs littler steel and has more advantages.

与原桥相比，两种试设计方案的系梁自重可减轻近30%，但波形钢腹板组合系梁方案的钢材用量较平钢腹板组合系梁方案少，更具优势。

There is a distinct correlativity between zymogram distance of maize combination and seed yield heterosis, but toba...

雄性不育系与可育系的同工酶酶谱存在着明显差异，并且不育系的同工酶活性降低。

This paper extends the analysis for axial-system torsional oscillation into the nonlinear domain,and the research for Hopf ramification phenomena in axial-system torsional oscillation has been made using the time-domain simulating results,it verified the analysis results of similar nonlinear differential equation describing the axial-system torsional oscillations.

文中把发电机轴系扭振的分析扩展到非线性领域，并对轴系扭振中的Hopf分歧现象进行了研究，利用时域仿真结果对从描述轴系扭振的近似非线性微分方程分析所得结果进行了验证。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。