反像

It has been known for many years that an electron and its antiparticle, the positron, may together form a metastable hydrogen-like atom, known as positronium or Ps ref.

多年前科学家就已经知道，一个电子和它的反粒子，即正电子，能够结合形成一个亚稳态的、像氢原子一样的原子，被称为positronium。

It has been known for many years that an electron and its antiparticle, the positron, may together form a metastable hydrogen-like atom, known as positronium or Ps ref.

多年前科学家就已经知道，1个电子和它的反粒子，即正电子，能够结合形成1个亚稳态的、像氢原子1样的原子，被称为positronium。

It has been known for many years that an electron and its antiparticle, the positron, may together form a metastable hydrogen-like atom, known as positronium or Ps ref.

核心提示：多年前科学家就已经知道，1个电子和它的反粒子，即正电子，能够结合形成1个亚稳态的、像氢原子1样的原子，被称为positronium。

A Ring Imaging Cherenkov counter dedicated to the AMS experiment is under development.

一只戒指成像切伦科夫反致力于AMS实验目前正在开发中。

Amon de Valera stated that he would serve as an ordinary IRA volunteer, and left the leadership of the Anti-Treaty Republicans to military leaders such as

埃蒙·德瓦莱拉宣称他会像一名普通共和军志愿者一样为国效劳，并将反条约共和派的领导权交给诸如

This is frist letter to u,i am in Harar house now,and i will go back to ADDIS tomorrow morning,my office in ADDIS,I always stay in ADDIS,sometime go out of ADDIS,like this time that i am come to Harar,and i am happy know u muslim girl friend,it is so pity!

这是第一次给你写信，我现在在哈勒尔房子了，我明天早上将会离开，反回亚的斯，亚的斯的办公室，我总是呆在亚的斯，有时候出去，像这次，我就来到了哈勒尔，我很高兴认识你，穆斯林的女朋友。

Finally, according to market conditions and market products this article paper analyzes the trends in the development of camera technology, and designs a color night vision camera.

最后根据市场情况和市面上产品的情况分析了摄像机技术的发展趋势，并设计了一款彩色夜视摄像机。

Only person height weeds and the fierce looks stone idles were there.

只有半人深的荒草和龇牙咧嘴的神像。