轰击

Iran had first told the International Atomic Energy Agency that its last experiments with the reprocessing of plutonium took place in 1993 but revised that date to 1998, according to a draft speech deputy IAEA chief Pierre Goldschmidt is due to make to the agency's board of governors on Thursday.

Plutonium：钚，一种天然地放射性银色超铀金属元素，存在于铀矿中，对铀元素进行中子轰击而人工制成。它是一种核辐射毒素，特别是能够被骨髓吸收，并被用作一种核反应燃料并用在核武器中。

The results showed that the good cellular immunity effects were induced with pcDNA-GPV-VP3 by i.m. and gene gun bombardment.

表明，基因枪轰击和肌肉注射pcDNA-GPV-VP3均能诱导雏鹅产生良好的细胞免疫应答。

Japanese heavy artillery was shelling downtown Singapore across the Johore Strait.

日本人的重炮，正隔着柔佛海峡轰击新加坡的商业区。

In the subsequent experiments, when the LaBe cathode emitted continuously and the current is 40uA, the minimum diameter of electron-beam spot recorded was 22 um. While the LaB6 emitted pulse, the minimum diameter of the focus decreased and wasnt more than 15um. The reason is that the heat accumulated on the foil-film, which enlarged the focus dimension, reduced remarkably.

当阴极采取连续发射电子的工作模式(发射电流40μA)时，记录测量到的最小电子束焦斑直径不大于22μm；而在相同条件下，以脉冲方式发射电子束时，其焦斑直径不大于15μm，原因是短时间的电子轰击减小了靶面的热堆积效应等。

The concept of equivalent rotationally rigidity is offered and the formula of rotationally rigidity is obtained.

主要做了如下几个方面的工作：对伸臂位于顶部的单层框架—筒体模型进行分析，提出了等效转动约束的概念和转动约束刚度的表达式。

Male cats normally do not need aftercare with the exception of the night after the anesthetic.

男猫通常不需要善后除了晚上的麻醉。