The suction device makes the paper box stick to the mould firmly.
2
其主要特点是通过调控装置可使吸气时供氧,呼气时暂停供氧,故使氧的利用率高达98%以上。
Its character is that through the adjustable valve controlled by inspiration and expiration, it offers and halts oxygen supply. The utilization rate of oxygen is over 98%.
3
采用锆泵作为吸气泵,设计出静态保真空模拟实验装置。
Adopting zircon pump as inspiration pump, a static state simulation equipment was designed for vacuum holding.