• 包层bāo céng envelope
• 包袋bāo dài envelope; bag
• 包迹bāo jì envelope
• 包膜bāo mó envelope
• 打印信封dǎ yìn xìn fēng print envelope
• 封袋fēng dài envelope
• 封套fēng tào envelope, packet
• 峰包功率fēng bāo gōng lǜ peak envelope power
• 函hán case; envelope; letter; a surname
• 开窗信封kāi chuāng xìn fēng window envelope
• 群速qún sù envelope velocity; group velocity
• 群速度qún sù dù group velocity; envelope velocity
• 围护结构; building envelope
• 信封xìn fēng envelop, envelope, mailer
• 罩套zhào tào envelope of hood
• 变压器biàn yā qì transformer; secondary generator
• 参量发生器cān liàng fā shēng qì parametric generator
• 产生器chǎn shēng qì generator
• 厂用发电机chǎng yòng fā diàn jī house generator
• 电动发电机diàn dòng fā diàn jī motor generator
• 短路发电机duǎn lù fā diàn jī short circuit generator
• 惰性气体发生器duò xìng qì tǐ fā shēng qì inert gas generator
• 发电机fā diàn jī dynamo, dynamotor, electrical machine, generator
• 方波产生器fāng bō chǎn shēng qì square-wave generator
• 横轴发电机héng zhóu fā diàn jī horizontal shaft generator; horizontal type generator

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3G, 401(K), a,