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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。

In this paper, the problem of an arbitrarily shaped planar crack which is perpendicular to the interface of bimaterial and loaded by interior normal pressure is studied by means of the method of hypersingular integral equation in three dimensional fracture mechanics.

利用三维断裂力学的超奇异积分方程方法，对双材料空间中重直于界面的平片裂纹Ⅰ型问题进行了研究。

A Doppler processing approach based on minimum variance distortionless response and resampling technique is proposed for multifrequency radar signals.

提出了一种基于最小方差无失真响应(minimum variance distortionless response， MVDR)算法和频率重采样技术的适用于多频雷达信号的多普勒处理方法。

However, when occurring in Mesozoic remelted granite, pyrite is featured mainly by high gold content in pentagonal dodecahedron and in its complex; low content in cubic pyrite; Au/Ag ratio between 1-2; both N and P types of pyrite present in most deposits and P type only in a few deposits.

产于中生代重熔花岗岩中时，黄铁矿以五角十二面体居多，五角十二面体及其聚形含金较高，立方体含金性较差；Au/Ag比值在1-2之间，As的含量较高(＞600×10〓)；Co、Ni的含量则较低，一般为10n×10〓；热电性以既有P型又有N型的P、N混合型为特征，少数金矿床表现为单一的P型。

In the quiet of that place even the voice of the surf is reduced to a whispered echo and the sounds of the forest are but the ghosts of sound--the faint sighing of evergreen needles in the moving air; the creaks and heavier groans of half-fallen trees resting against their neighbors and rubbing bark against bark; the light rattling fall of a dead branch broken under the feet of a squirrel and sent bounding and ricocheting earthward.

置身于此地的宁静之中，连拍岸的海浪声也减弱为喃喃的回响，而森林之声也宛如声之幽灵——四季常青的松针在风中微微叹息；半倒的树靠在邻树上，树皮互相摩擦发出阵阵咯咯声和更重的呻吟声；被松鼠踩断的枯枝掉地后反复弹动，发出轻微的嘎嘎声。

In the quiet of that place even the voice of the surf is reduced to a whispered echo and the sounds of the forest are but the ghosts of sound----the faint sighing of evergreen needles in the moving air; the creaks and heavier groans of half-fallen trees resting against their neighbors and rubbing bark against bark; the light rattling fall of a dead branch broken under the feet of a squirrel and sent bounding and ricocheting earthward.

置身于此地的宁静之中，连拍岸的海浪声也减弱为喃喃的回响，而森林之声也宛如声之幽灵--四季常青的松针在风中微微叹息；半倒的树靠在邻树上，树皮互相磨檫发出阵阵咯咯声和更重的呻吟声；被松鼠踩断的枯枝掉地后反复弹动，发出轻微的嘎嘎声。

In the quiet of those socate even the voice of the surf is reduced to a whispered echo and the corrects of the forest are not but the ghosts of correct----the faint sighing of evergreen commandles in the moving air; the creaks and heavier groans of half-fallen leaves resting one more timest theirs neighbors and rubbing bark one more timest bark; the light rattling fall of a dead branch broken under the foot of a squirrel and sent bounding and ricocheting earthward.

置身于此地的宁静之中，连拍岸的海浪声也减弱为喃喃的回响，而森林之声也宛如声之幽灵--四季常青的松针在风中微微叹息；半倒的树靠在邻树上，树皮互相磨檫发出阵阵咯咯声和更重的呻吟声；被松鼠踩断的枯枝掉地后反复弹动，发出轻微的嘎嘎声。

But comparing with the foreign ones, Chinese system of cession should be perfected in the condition of cession s insuring, the efficacity of informing, the range of cession, and the efficacity of twice cession, etc.

但与国外一些国家相比，我国的债权让与制度在债权让与生效的条件、通知的效力、债权让与的范围及债权二重让与的效力等诸方面还有待于完善。

Ellington uses three trombone instruments. His use of silent breaks adds a special tension to the song.

艾灵顿使用的是三种长号乐器，他的这种于静默中使用重节拍的方法为歌曲增添了一种特殊的张力。

Rather than confront and challenge autocracies, it was better to enmesh them in the global economy, support the rule of law and the creation of stronger state institutions, and let the ineluctable forces of human progress work their magic.

这一信念植根于启蒙运动时代，在经历了20世纪残暴的战争中受到了动摇，随着社会主义阵营的陷落又重获新生。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。