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Hydropower is the world's leading renewable energy resources in electricity generation that produces 71% of electricity more than other forms of energy sources such as coal, gas, and oil which are not reliable and gradually diminish day by day. Therefore, hydropower is essential and considered as an economical factor for producing electricity. There are many untapped hydropower resources in the world...
Manned underwater vehicle plays a significant role in underwater rescue. The key of this process is the docking between manned underwater vehicle and disable submarine within a certain angle. That means manned underwater vehicle has to have good maneuverability, especially the maneuverability of trim and heel. Ballast water system is a simple and effective way for the adjustment of trim and heel....
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.