产生金属的

This thesis firstly analyzes the condition which surface plasmon can be excited under.

本论文首先分析了激光和金属表面作用产生表面等离子体的条件。

Laser ultrasonic technique is a new technique that absorbs high-energy laser radiancy making use of metal surface, so, material is quickly heated, generate oscillation and generate ultrasonic pulse. The principle of actuating ultrasonic pulse has two kinds of elasticity actuating and ablation actuating.

激光超声技术是利用金属表面吸收高能激光辐射，引起材料快速加热，产生振动，发出超声脉冲的一种新技术，其激励超声脉冲机理有弹性激励和热烧蚀激励二种。

If we do not control, it will lose sensitiveo this paper put forward the distributing of shearing stress to the double

作用。若不加控制，会产生失敏。这里对双金属片中的剪应力分布提出见解，从而为控制剪应力大小

He produced an electric spark across a gap between two metal balls by applying an electric current to them.

他把电流接通到两个金属球上而在其间的间隙处产生火花。

The metal ions transferred not only in the perpendicular direction but also in the horizontal direction with the flow of surface runoff and underflow.

尾砂在风化氧化过程中释放出的金属离子不仅向下迁移，也随地表径流和潜水流动在水平方向产生一定迁移。

Ii Argon is unreactive, so that it does not react with the metal filament even when hot.

氩是不活跃的，所以即使高温，它也不会与金属丝产生反应。

Voltage to the plate of a vacuum tube.

能够产生真空管金属板稳定负电压的电池。

All the electronic equipment with electriferous metal shell are all adopting grounding protection in order to avoid electric leaking or static.

所有电气设备不带电的金属外壳均采用接地保护，以防漏电或产生静电。车间内照明采用交叉供电，重要场合设应急照明。

Inhibitors including sodium dodecyl sulfate, boric acid, sulfur, and potassium fluoroborate (KBF4) are added to compare the surface quality of AZ91 casting Experimental results show that adding sulfur in green sand obtained AZ91sand castings with satisfied surface quality and adding KBF4 in green sand produced sand castings with best mechanical properties.

实验结果显示添加硫磺，可得到较佳模砂性质且有效控制产生较好的金属表面品质，添加氟硼酸钾有较佳机械性质。

As the superconductive tube is made of special material, it has good compatibility and no non-condensable gas occurs so its service life can be prolonged and it has no harmful to human bodies.

超导热管为特殊金属材料，具有良好的相容性，无不凝性气体产生，延长使用寿命，且对人体无害。

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。