词汇	first stage bod
释义	first stage bod 第一段生化需氧量
随便看	direct-current telegraph direct-current telegraph transmitter direct current telegraphy direct-current telegraphy direct-current telegraphy work direct current test direct current test method Direct-Current Test Volts 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