two-excimer laser

Numerical simulation shows that the laser-tissue thermal interaction model has two stages: the initial non-steady stage and the succeeding quasi-steady stage with the characteristic of constant parameters such as interface temperature, interface moving rate and carbonization zone etc.

数值模拟表明，该光热作用过程分为两个不同阶段：起初的非稳态阶段以及紧接着的准稳态阶段，此时相间边界温度、相间边界移动速度以及碳化层的厚度均为与时间无关的常数。

Multiphoton dissociation ( MPD) of tetramethylsilane and two photon resonance three photon ionization of silicon atoms are studied with parallel plate vacuum cell at violet laser radiation in the wavelength range 410~ 404nm.

在410～404nm的紫激光作用下，利用平行板电极装置研究了Si（CH3）4的多光子解离（MPD）及Si原子的双光子共振三光子电离。

The results demonstrate that the interaction modes of two heat sources are totally different from each others for different cladding methods, i.e. pre-placed coating by thermal spraying, pre-placed coating by organic binder and powder feeding in laser-induction hybrid cladding.

研究结果表明，对于氧乙炔热喷涂层、冷预涂层和自动送粉式激光&感应复合熔覆，激光和感应两种热源的作用方式是不同的。

The quantum theory of the two-mode laser in a three-level atomic system with common low level

共下能级双跃迁激光的量子理论

Two rival laser surgery systems are undergoing clinical trials in the US.

两个相互竞争的激光手术系统正在美国进行临床试验。