[section_tc][column_tc span=’12’][text_tc timing=’linear’ trigger_pt=’0′ duration=’1000′ delay=’0′] WASHINGTON (Reuters) – China is trying to gain access to sensitive U.S. technologies and intellectual properties through telecommunications companies, academia and joint business ventures, U.S. senators and spy chiefs warned on Tuesday at a Senate hearing. Republican Senator Richard Burr, chairman of the Senate Intelligence Committee, said he worried about the spread in the United States of what he called “counterintelligence and information security…