The key lies in producing enough great driving force of natural circulation at reasonable heating temperature difference to make masted tape self-rotate reliably in heat transfer tubes.
其关键是能否在合理的加热温差下产生足够大的自然循环推动力,足以带动自动清洗螺旋扭带可靠地自转。
Is there someone has any high-efficiency way to masted that in a short time ?
有没有朋友有什么高效的方法能在短期内学会十国语言哩?
The ship-building practice of ancient China has a long history, originated from the primitive floating rigs and developed to rafts and dugouts, then to 「plank boat」, 「wooden masted boat」.
中国古代渔船源远流长,由原始浮具发展为筏与独木舟,而后又发展成为「木板船」、「木帆船」。
Probably was so masted when she set forth.
在她启程时,大概桅桿直立,帆完全扯起。