two-frequency laser

Correcting Position Errors of NC Machine Guided by MJS Two-frequency Laser Interferometer

用MJS双频激光干涉仪指导数控机床位置度误差的修正

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

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。

Based on theoretic analysis of Fourier heat transfer law and first thermodynamic law. we program the heat transfer numerical simulate programme of one dimension and of two dimensions that fit laser irradiation.

本文在用傅立叶（Fourier）热传导定律和热力学第一定律进行理论分析的基础上，独立编制了适合于激光辐照的一维和二维热传导数值模拟程序；

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。

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。