Agilent Technologies Inc. A shares fell 2% premarket on Wednesday after the laboratory instrument maker late Tuesday trimmed its full-year revenue and earnings outlook, citing weakness in China. The company now expects full-year revenue in the range of $6.80 to $6.85 billion, down from $6.93 to $7.03 billion previously, and full-year adjusted earnings per share of $5.40 to $5.43, versus a previous forecast of $5.60 to $5.65. “The economy in China continued to weaken during the quarter, translating into a more challenging market environment than we had anticipated,” Agilent CEO Michael McMullen said on a call with analysts…