词汇	synthetic optical whitner
释义	synthetic optical whitner 医漂白剂
随便看	direct current therapy unit direct current three wire system direct-current three-wire system direct current tie direct-current tie direct current tie line direct current timing direct current torque motor direct current track circuit direct current tracking direct current traction direct current transducer direct-current transducer direct current transfer direct current transformation direct current transformer direct-current transformer direct current transiting direct current translator direct current transmission Direct Current Transmission direct-current transmission direct current transmission line direct current trigger direct-current trigger