Sepsometer
空气有机质测定计
🗣️ 情景例句
He applied to Columbia,
他申请了Columbia大学。
I will warn you.
我会警告你。
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。