查询词典 algae fission

Fission track ; Uranium reference standard glass ; Calibration

裂变径迹；铀标准玻璃；刻度

The Mesozoic-Cenozoic thermal history of the northeastern Sichuan Basin is studied through analysis of the age of apatite fission tract of 6 sandstone samples and inversion of time-temperature evolutionary history.

通过对6个砂岩样品磷灰石裂变径迹年龄的分析和时间—温度演化历史的反演，研究了川东北地区中、新生代的热历史。

In studies of interaction among pile, platform that above it and surrounding soil, this paper employ the concept of plate element to simulate the loading character of platform, and employ the concept of solid element to simulate the character of pile and soil, using the finite element method after understanding the geometry properties of pile, soil and the platform. Analyzing the loading properties of the three entities above and their deformation, this paper also employ a special element, Penalty Element. The introduction of penalty element of this kind has served to guarantee the join harmony of displacement between solid element and plate element, thereby effectively resolving the join problem between platforms, pile that support it and surrounding soil.Considering significant property difference between pile material and its surrounding soil, there may be much shear stress on their contact interface produced under vertical load, thus causing displacement or fission. Therefore it is necessary to adopt one special constitutive law of this kind of contact interface, which can reflect its feature of loading and deformation thoroughly. On the basis of the deformation feature and constitutive laws of some contact interface obtained by Zhang Dongji and people concerned through some single-shear experiments on contact interface between structure and soil, this paper employ one pile-soil three-dimensional constant thickness contact interface model to simulate the " slide" taken place on the interface between pile and its surrounding soil. With this kind model, this paper has also created one finite element model, which can be applied to perform finite element calculation and analyze the pile-loading feature, and deduced its element stiffness matrix.

在承台-桩-土共同作用中，考虑桩与承台的几何特性，采用有限元方法，用实体单元模拟桩土，用板单元模拟承台，更具体地分析桩和承台的受力特性和变形，而且还采用罚单元—既实体单元与板单元之间连接必须满足变形协调条件，来有效地解决了承台与桩土的连接问题，且在桩土共同作用中，由于桩体结构的材料性能与周围土层性质相差较大，在竖向荷载下有可能在其接触面上产生较大的剪应力从而导致错动或开裂，因此，为了充分反映桩土接触面上的受力及变形特征，应采用一种桩土接触面特有的本构关系，即利用张冬霁等人关于结构与土体接触面单剪试验所得到的接触面变形特征及其本构关系，引入桩-土三维等厚度接触单元来模拟桩与桩侧土之间的&滑移&，在此基础上建立可用于桩基承载性状分析的有限元计算单元模型，并推导出了各单元的刚度矩阵。

Like fission-track dating, alpha-recoil track dating is based on the accumulation of unclear particles which are re-leased by natural radioectivity and produce etchable tracks in solids.

中文摘要：与裂变迹径定年类似，α反冲径迹定年（Alpha-Recoil Track）也是基于天然放射性元素所释放核粒子在固体中产生可蚀刻径迹的积累。

Of or relating to asexual reproduction, such as fission or budding.

但是，他把爱与&生殖&关系连线，并不完全是偶然的。。。。

Asexual reproduction by multiple fission; characteristic of many ''.

通过多种无性裂变的生殖；许多孢子虫具有此特点。

To make an atomic bomb we have to use uranium 235, in which all the atoms are available for fission.

制造原子弹必须用铀235，因为它的所有原

To make an atomic bomb we have to use uranium 235, in which all the atoms are available for fission.

制造原子弹必须用铀235，因为它的所有原子都可以裂变。

To make an atomic bomb we have to use uranium 235, in which all the atoms are available for fission.

制造原子弹，我们必须用铀235，因为铀的所有原子都会裂变。

To make an atomic bomb we have to use uranium 235, in which all the atoms are available for fission.

制造原子弹，我们必须用铀235，因为轴的所有原子都会裂变。

We stopped by the old fashion ice cream parlor Manhattan Beach Creamery for some refreshment. The "No Shoes, No Shirt, No Problem" sign on the wall epitomizes the beach lifestyle.

我们去商店区的一家老式冰淇淋店坐坐，墙上挂著「没鞋，没上衣，没问题」的牌子完全捕捉了海滩生活的随性及风格。

"If therefore", argues Bellarmine we can offer our prayers and our satisfactions in behalf of those detained in purgatory, because we are members of the great body of Christ, why may not the Vicar of Christ apply to the same souls the superabundant satisfaction of Christ and his saints--of which he is the dispenser?

" "因此，如果"，认为贝拉明（德indulgentiis ，十四）"我们可以提供我们的祈祷和我们满意的代表那些被拘留在炼狱，因为我们是成员的伟大基督的奥体，为什麼可能不是牧师基督适用於同样的灵魂满意的过剩是耶稣和他的圣人-他是在配药？