a ventilation system that must be ducted through the wall.
必须穿过墙壁管道通风系统。
a ventilation system that must be ducted through the wall.
必须穿过墙壁管道通风系统。
A test of arrosion performance of anticorrocive built-up weld layer in different meeiums was con-ducted by using a self-made arrosion testing machine.
用自制腐蚀
试
机对耐蚀堆焊层在不同介
中
腐蚀
性能进行了试
,
表明:腐蚀介
不同,堆焊层
速率也不同。
In addition, the USAF continues to fund development work of the Aerojet (formerly Atlantic Research) Variable Flow Ducted Rocket ramjet system as a future propulsion option for an extended range AAM.
此外,美国空军继续投资于航空喷气研究所(原来大西洋研究所)
可变喷流管火箭发动机系统,将其作为增程空空导弹
未来推进选项。
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