一阶导数差示脉冲极谱法的英文

first-derivative differential pulse polarography

• 一:    one
• 阶:    steps; stairs
• 导数:    derivative; differ ...
• 差:    send on an errand; ...
• 示:    show; indicate; si ...
• 脉冲:    impulse; pulse; im ...
• 极谱:    polarogram
• 法:    law