protective atmosphere

常见例句

The deep levels in electron irradiated CZ silicon single crystal grown in pure nitrogen protective atmosphere has been studied.
本文研究了电子辐照在氮保护气氛中生长的直拉硅单晶中引入的深能级。
The requirements of bright annealing of copper and brass strip on furnace, protective atmosphere and rolling coolant are analysed.
本文就铜及黄铜的光亮退火对退火炉、保护气氛，轧制润滑剂的要求作了分析。
The influence of the parameters such as surface treatment state, laser output power, welding speed, protective atmosphere, and pulse frequency on the welding quality was studied.
研究了试件表面处理状态、保护气体、激光输出功率、焊接速度、激光脉冲频率等工艺参数对焊接质量的影响规律。

"This number is a reminder that for the last 150 years — and especially over the last several decades — we have been recklessly polluting the protective sheath of atmosphere that surrounds the Earth and protects the conditions that have fostered the flourishing of our civilization, " Gore said in a statement.
NPR: Greenhouse Gas Milestone; CO2 Levels Set Record