This paper introduces two steps B-diffusion technology, rt is very helpful to improve the properties of mesa power transistors.

本文介绍两步硼扩散工艺，它对改善台面功率晶体管的性能极有帮助。

youdao

Metal equipment giant mesa, ultra high power CO2 laser cutting machine, CNC bending machine and other large and high precision equipment.

装备超大台面，超高功率CO2金属激光切割机、数控折弯机等大型高精设备。

youdao

Indeed, the popular rising that inadvertently swept Mr Mesa to power last October was led by radicals who wanted to renationalise the oil and gas industries.

ECONOMIST: Bolivia's energy referendum

Street power used to work only against Mr Mesa.

ECONOMIST: Turmoil in Bolivia

Given these conditions, Mr Mesa has not done too badly on keeping four promises that he made when he came to power.

ECONOMIST: Bolivia's president performs a tricky balancing act