本页所展示的图片就是这两个星系在几亿年前相互作用的情景，下方的星系ugc 1813正伸手去勾上方的UGC 1810星系外露的胳膊。
What you're seeing on this page is an interaction that occurred a few hundred million years ago, as the lower galaxy (UGC 1813) dived through the outside arms of the upper one (UGC 1810).
草药疗法并不适合所有人，它也许会与你正服用的其它药物产生相互作用。
Herbal treatments are not suitable for everyone and they may interact with other medicines you are taking.
对这些正电子有一个可能解释，就是它们来自同一种暗物质以正、反物质形式出现的一对粒子的碰撞（物质湮灭），这样的暗物质又被称为“大质量弱相互作用粒子”（WIMP）。
One possible explanation for these positrons is the mutual annihilation of the matter and antimatter forms of a type of dark matter called weakly interacting massive particles, also known as WIMPs.
反物质，首先是由保罗·狄拉克(Paul Dirac)于1931年所预先估计出来的，它有着与正常物质相反的电荷，可以在一瞬间内与正物质能量的相互作用而湮灭。
Antimatter, first predicted by physicist Paul Dirac in 1931, has the opposite charge of normal matter and annihilates completely in a flash of energy upon interaction with normal matter.
同时研究了不同偶极相互作用强度下的剩磁和使磁化强度平行于外场方向分量由正变为负的临界场。
The remanence and the critical field refers to the field that makes the magnetization transit from positive value to negative value, are studied at various strength of the dipolar interaction.
肺和心血管系统之间相互作用的复杂本质正越来越被人理解。
The complex nature of interactions between the pulmonary and cardiovascular systems is becoming increasingly appreciated.
与正折射率缺陷情形相比较，负折射率缺陷间的相互作用对缺陷模的影响更大，局域模谱线更宽。
Compared with the case of positive refractive index structural defects, the influence of the interaction between defects on defect modes is stronger, the spectrum-width of defect mode is broader.
正由于凋亡相关蛋白和细胞周期调节因子间的相互作用，使恶性肿瘤保持较高的细胞累积率。
It is because the reciprocal activation of apoptotic proteins and cell cycle control factors that maintain a higher cell accumulation rate in malignant tumors.
首先提出正物质质量与反物质质量之间的相互作用力可能是“万有斥力”和正反物质世界对称性的假设。
The hypothesis that the mutual action between matter and antimatter may be "universal repulsion" has been put forward at first.
由于在幺正变换下产生了新的高阶相互作用项，利用平均场近似手段得到了系统参数随流参数变化的流方程。
Interactions not contained in the original Hamiltonian are generated by this unitary transformation. With an average field approximation, we can close the flow equations.
由于在幺正变换下产生了新的高阶相互作用项，利用平均场近似手段得到了系统参数随流参数变化的流方程。
Interactions not contained in the original Hamiltonian are generated by this unitary transformation. With an average field approximation, we can close the flow equations.
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