Scientists filmed maple seeds as they wafted through a smoke-filled wind tunnel.
科学家们在一个充满人造烟雾的风洞里摄制下枫树翅果随风飘动的情形。
2
In the paper, the qualification of the fire temperature and smoke not to pollute the non-fire tunnel is brought forward, the engineering measures to avoid the pollution are also suggested.
论文提出了火灾温度和烟雾不会从横通道对非火灾发生隧道产生污染的通风条件和工程措施。
3
The properties of fire smoke flow in fire tunnel was simulated and computed by using fire flow control equations.