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An experiment on near threshold double ionization of helium impacted with 106 eV electron has been performed by using the newest developed reaction microscope. In this experiment the momenta of all products after double ionization of helium were measured and the five fold differential cross section was obtained for emitted electrons.

利用最新发展起来的适用于低能电子入射的反应显微成像谱仪，对电子轰击He原子近阈值的双电离过程进行了研究，实验测量了反应后4个粒子的全部动量，获得了五重微分截面及出射粒子间的关联信息。

The leaf area increased 5 and 3 fold in the closed and diffusive conditions, respectively.

叶面积在封闭和通气条件下分别增加了5倍和3倍。

Place two blue tiles face down on a dishtowel and fold over the edges.

Place二蓝色瓦片在dishtowel面对下来并且重叠边缘。

The fold distance of the heuristic function was used instead of its direct distance.

将启发函数中的直线距离替换为折距，对其进行了改进。

In this paper, 3-D tertiary structure of protein fold was mapped into 2-D distance matrix which can be further regarded as gray level image.

最后应用于27类折叠子分类，对独立集测试的精度达到了71.95 %，对所有数据进行10 交叉验证的精度为78.94 %。

Even hundred fold grief is divisible by love.

再大的悲伤也会被爱驱散。

This two-fold event is celebrated as the Dormition ("falling asleep") of the Theotokos.

这个双重事件就像神的母亲著名的死亡一样。

In the 20th Century, the Dow-Jones Industrial Average increased by about 175-fold, mainly because of this retained-earnings factor.

在 20 世纪里，道琼斯平均工业指数上升了大概 175 倍，主要是因为留存收益。

A syncline is the opposite type of fold, having downwardly convex layers with young rocks in the core.

向斜是背斜褶曲的相反形式。岩层向下凹，核心为年青的岩层。

In that day, a seven-fold purification process meant the silver had no dross, or error, in it.

在这一天了七倍净化过程意味着没有糟粕银牌或错误，它。

In the chapter 2, the theoretic knowledge about the photosensitive resin and the grinding tools was firstly introduced.

第二章阐述了光固化树脂结合剂磨具的相关理论研究。

Do not use the program's indenting or margin-setting features; these will be added during typesetting.

不要使用缩排，页面边缘设置之类的选项，偶看不大懂。