对电话无噪声的发电机的英文

telephonically silent generator

• 对:    answer; reply
• 电话:    telephone; phone; ...
• 无:    not have; there is ...
• 噪声:    noise; stew; swish ...
• 的:    4次方是 The fourth po ...
• 发电机:    gen; alternator; d ...