The main drain is a 1-inch to 2-inch line leading from the bottom of the pool, outside the pool shell, to a trench about 24 inches below ground level. The drain joins other pool lines from the skimmers and return lines. The skimmer and main drain lines join into one that leads to the suction side of the pool pump.
Bohai University (BU), which was established in February 1950, is a comprehensive university administered by Liaoning Province government. BU is located in Jinzhou City, Liaoning Province, China. Jinzhou is a seaside city with long history and cultural tradition.
Yale University is an American private Ivy League research university in New Haven, Connecticut. Founded in 1701 in Saybrook Colony as the Collegiate School, the University is the third-oldest institution of higher education in the United States. The school was renamed Yale College in 1718 in recognition of a gift from Elihu Yale, who was governor of the British East India Company.