Maraging
马氏体时效处理; 高强度热处理
🗣️ 情景例句
Yes.
是的。
To navigate
航海
It was the idea of supporting a craft on a 'pad',or cushion, of low-pressure air, ringed with a curtain of higher pressure air.
用一个气垫来支撑船体，低压空或软垫，软垫周围用高压空气环绕。