be annoyed for

be a bear for punishment be a blank on the subject of be a cup too low be a dead loss be a different breed of cat from be a dig at be a disgrace to be a famous hand at be a fool for be a fool to oneself be a good blade be a good judge of

constant-current charging constant-current circuit constant-current discharge constant-current dynamor constant-current electrolysis constant-current filter constant-current generator constant-current modulation constant-current network constant-current potentiometric titration