例句與造句

1. Recently, Renfroe said, his team swept the Internet to find an obsolete circuit board used in testing the shuttle's master timing unit, which keeps the spaceships'computers in sync.
2. This included monitoring the onboard General Purpose Computers ( GPCs ), flight-critical, launch and payload data buses, the Multi-function Electronic Display System ( MEDS ), Solid-State Mass Memory ( SSMM ) units, flight critical and payload Multiplexer / De-multiplexer ( MDM ) units, Master Timing Unit ( MTU ), Backup Flight Control ( BFC ) units and system-level software.
3. At T minus zero, the two SRBs are ignited, under command of the four onboard computers; separation of the four explosive bolts on each SRB is initiated; the two T-0 umbilicals ( one on each side of the spacecraft ) are retracted; the onboard master timing unit, event timer and mission event timers are started; the three SSMEs are at 100 %; and the ground launch sequence is terminated.
4. It's difficult to find master timing unit in a sentence. 用master timing unit造句挺難的