Periadventitial
[医] 外膜周的
🗣️ 情景例句
How you doing?
你怎么样了？
Do you have your driver's license?
你有驾驶执照吗？
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。