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Its subway system was opened in 1975.
Furthermore, the sensing system was opened to external atmosphere after saturation.
In Philadelphia, a subway system was opened in 1907, and Chicago's system opened in 1943.
In 1999, line 5, the first of the Tehran metro system was opened to the public.
In 1956 a railway linking Fuzhou with the interior of the province and with the main Chinese railway system was opened.
The rapid-transit system was opened to commuters a day after Prime Minister Atal Bihari Vajpayee rode in its inaugural run over a five-mile stretch.
Similar(49)
But if the system is opened up to competition, it is rendered infective.
The Red Line of the system is opened, and the Orange Line is scheduled to be opened in August 2008.
When the system is opened for blood sampling, there is a small risk of microbial contamination.
The design of effective vaccine delivery system is opening up new feasibilities for making immunization more safe and efficient.
Without close regulation, such a system was open to abuse.
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