轰击

To create a mere three atoms of element118, the scientists spent two months bombarding the californium target with30 billion billion calcium ions.

为了创造这微不足道的3个原子，科学家花费了2个月时间，用30万亿亿个钙离子来轰击锎离子。

The researchers fired a beam of calcium ions, each containing 20 protons, into a target of californium, a highly radioactive synthetic substance with 98 protons.

他们轰击了一束每个原子中含有20个质子的钙离子，得到了锎，一种原子核中含有98个质子的更高级人造放射性元素。

The chromone was finally identified as cinnamoyl-C-glycoside chromone by ultraviolet, fast atom bombardment mass spectrometry, nuclear magnetic resonance (1H NMR and 13C NMR).

经过紫外检测、快原子轰击质谱及核磁共振等方法的结构分析鉴定，证实分离所得物质为肉桂酰基-C-葡萄糖甙芦荟色酮。

Negative Fast Atom Bombardment and Collisional Activation Mass Spectrometry in the Structural Analysis of Oligoglycosides

负离子快原子轰击及其碰撞活化质谱法在寡糖苷结构分析中的应用

These subtle signals of deformation, when combined with the ability to measure the age of the disfigured landscapes (using cosmogenic nuclides that bombard the Earth from all corners of the universe), produced surprising results.

这些敏感、微妙的畸形变化信号，在结合测量呈现山水地貌毁损变形的年代能力（采用来自宇宙各个角落的轰击地球的宇宙进化论的核心要素）时，就会产生出令人惊讶的结果。

These data were used to infer the molecular formula and the elemental compositions of all the fragmental ions through software interpretation and, by further applying fragmentation regularities of mass spectrometry, the majority of ions were fully assigned. A base peak at m/z 402 in the mass spectrum was found as the molecular ion. The fragments were created mainly from the fragmentations of the tetrahydrofuran rings and the hydroxyl group. The most fragment products contain the dimethoxy phenyl group.

利用这些数据通过软件导出了分子式和所有碎片离子的元素组成，由此进一步根据质谱裂解规律对石梓醇分子的电子轰击质谱的主要裂解碎片给出了完全的归属，质谱中发现基峰为分子离子峰(m/z402)，裂解碎片主要来自双骈四氢呋喃环的裂解和羟基引起的裂解，绝大部分裂解产物包含二甲氧基苯基基团。

The fish samples were cleaned up by Florisil, then analyzed by GC-EI-MS to determine eight phthalic acid esters, diethyl phthalate, dipropyl phthalate, dibutyl phthalate, butyl benzyl phthalate, dipentyl phthalate, dicyclohexyl phthalate, dihexyl phthalate and diethyl hexyl phthalate.

鱼肉样品以Florisil硅藻土层析柱净化后，经气相色谱-电子轰击离子源-质谱法分析其中8种邻苯二甲酸酯含量：邻苯二甲酸二乙酯、邻苯二甲酸二丙酯、邻苯二甲酸二丁酯、邻苯二甲酸丁基苄基酯、邻苯二甲酸二戊酯、邻苯二甲酸二环己基酯、邻苯二甲酸二己酯、邻苯二甲酸二(2-乙基己基)酯。

Experiment result demonstrates that its surface isn't oxidized by contrast with the stainless steel at 1 000 ℃. Under the single pulse high voltage, the film shows feeblish discharging characteristic after the bombardment of the high energy microparticles at hundreds times. This can increase the voltage holding capability and reduce the dynamic load of pulse power.

实验证明：在高达 10 0 0℃的温度下，相比不锈钢材料，薄膜表面几乎不被氧化；在单次脉冲高压作用下和在经受数百次高能微粒子轰击后，仍呈现出弱放电特征，既提高了耐压能力，又降低了脉冲电源的动态负载

The results in this paper are concluded as follows:(1) Rolling contact fatigue has been used to examine the interfacial reaction products and study the mechanism of ion beam intermixing effect on the adhesion of Cr-N coating on steel by IBAD.

对多次冲击条件下薄膜的失效抗力及其与薄膜力学性能之间的关系进行了初步探讨，得到如下结果：（1）用滚动接触疲劳法检测离子轰击导致的界面反应产物和研究离子束共混对钢基体上IBAD沉积Cr-N薄膜结合强度的影响本质，结果表明，滚动接触疲劳能有效地分析界面最薄弱位置和评估界面反应产物，滚动接触疲劳引起的剥落可作为研究界面反应产物对结合强度影响的根据。

In this study, insect-resistant cry1Ah gene and glyphosate-toleranct 2mG2-epsps gene was used to construct an insect-resistant/glyphosate-tolerance bivalent plant expression vector, glyphosate isopropylamine salt as a screening agent, 2mG2-epsps gene as a selectable maker gene, the vector was transfer into maize immature embryonic calli by microprojectile bombardment, 80 T0 transformed plants were obtained.

本研究利用抗虫基因cry1Ah和耐草甘膦基因2mG2-epsps构建了双价植物表达载体，通过基因枪轰击转化玉米，以2mG2-epsps为筛选标记基因，以草甘膦异丙胺盐作为筛选剂，获得到了抗性较好的T0代转化植株80株。

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。