DSX321G 40.000 MHZ DSX321G 40.000MHZ DSX321G 40M DSX321G 40MHZ DSX321G 40MHZ 16PF DSX321G 40MHZ 8PF 7PPM DSX321G 42.000MHZ DSX321G 44.550MHZ DSX321G 48.000MHZ DSX321G 48.000MHZ 直插晶振